Transcript for:
Acids, Bases, and Salts Overview

The burning is called fire, the extinguished is called ashes And which makes subjects like science easier His name is Prashant Kirar. so hi Everyone, I am your own Prashant Brother, why are you wearing these glasses? Any No matter. Today I am going to show you a new one shot I am going to teach. The chapter whose name is Acids, Bases and Salts. I know this I am facing a lot of problems in the chapter No. One thing is that I cannot understand this. so many The names of salts and salts are also very strange Strangely. Their processes are weird Strange chlor alkaline process. This is any Is there a good process? today you I will tell you with tricks. something I will tell you techniques that will help you remember everything It will also happen. will also go into memory and the next Within one and a half hours you will become important You will also practice the questions which They are going to appear in the exam. Whether school be it an exam, be it a board exam, paper Brother, I have to make it from here. Ok? so the whole You'll have everything covered here. Your Prashant bhaiya is with me. So remember why To fear when PK bhaiya is here. So let's go Let's start. First in the chat Tell me how is the josh meter? Energy Meter How it is? Is that strength coming from within or Are you not coming? Because the energy and enthusiasm meter It is very important. Isn't it? when your If master has energy then brother how can you Is it cold? I took the energy within myself. Let us go With fun and frolic. By cracking some jokes. Isn't it? You will read everything with tricks. Where does this chapter start from? These The chapter starts with acid. Very There will be all such students who have nothing He must be coming. You should also watch this lecture. Very There will be all such children who will come for revision He might have come. You should also watch this lecture There is no problem. this chapter from acid It starts up. So what is acid? That is the first question. So look if I If I tell you the scientific definition, acid is that thing which donates H plus ions. Acid is a substance that donates H plus Ion. There is one ion. in ninth class Had read. oh ho ho we are in ninth class He was doing that. means not studying Were. Isn't it? Were chatting and waiting. Any No matter. H+ ions: Look at the two types of ions. used to be. Cations and anions are positive and Negative. If you don't remember then it's no problem It won't even be useful. Basically, the H+ ions which What is the philanthropist who gives? that acid Is. What is that? That's acid. very nice. Ok, tell me how is the acid test? Is? Hey, there is acid in your lemon. What is a lemon like? It is sour, brother. It tastes sour, but it is sour. Is No? So what is the test like? they have sore Test. Their taste is sour. Ok? If we do a litmus paper test. Litmus What is paper? talk about it further do. But just understand this much for now. Litmus Paper What does it do in the test? this blue litmus Converts the paper into red. It turns it red. How will you remember that Those which contain acids are dangerous. Isn't it? If your school has labs etc. then They keep acid etc and say danger Is. It is dangerous, isn't it? So Red Red Things Are Danger it occurs. Red flag in your language I I am a green flag, son, look. if your Whatever is a red flag in language, it means red Danger. That means, what are acids? Red Let us convert the litmus paper. Correct Is? Now, whose do you want to remember? Acids such as hydrochloric acid. which we have already read in the first chapter Inside. Sulfuric acid, citric acid. Let's talk about it now. Now directly move towards those acids which That we get inside nature. Naturally The acids that we are getting. butt to him Let us first look at the basis. Basis Key what is the definition brother? what is he saying Is? So look brother, a person who doesn't take basis Is. Either it will take H+ ion or it will take OH Will release negative ions. OH negative ion. What did I say? OH negative ion release Will do it. Ok? basis are the substance that Here accept the proton i.e. H+ ion and Donate hydroxide ion. Hydroxide what happens son? That's what I just told you told. OH negative ion. Very simple simple. Ok? very nice. Isn't it? So it takes this. Either it gives OH negative. Very true. Now what do they taste like? Tell me the truth. Don't lie. It is absolutely true. Mummy swear We used to have fights when I was a child And about my sister we would make my mother swear Are. I swear on mom that no one lies. Look, I swear to mom that I am telling you the truth. Have you ever had a shower in your mouth? The soap is gone. It is gone. It is gone. So What is the test like? It is bitter. Bitter It feels strange. Isn't it? That is, the base which would have been Isn't it bitter? It is bitter. How is the son? remember they have bitter Test. It is bitter. Ok? Basis Feel Slippery. You may feel it slippery or soapy They are doing it. Apart from that this red litmus converts it into blue. Acid The opposite of. The opposite of acid. very nice. Remember some names. sodium hydroxide There is a base. other than that its about We will talk. Ammonia is also a type of There is a base. If you read further then slowly I will continue reading slowly. So much tension right now I won't take it. Do not take load. take your rest now I am studying from. Now let's talk about the Natural Akaring Acids. some acids that It is in nature. Where in nature? Fruits is inside. and you should remember this name Is. It is very important because MCQs Let me ask. So I'm telling you in advance It is also written 'Important'. ask any child I am wondering where can I get the notes, brother? Notes. There are some kids who just need to write notes Are. study notes notes. Notes Hey Brother You will get the notes. in the notes description or Then go to Telegram. Telegram's The link is given in the description. join us Take. You will get the notes. from your notes What is love, friend? Love your studies. Look. Come see, the first one comes Vinegar. What is in vinegar? Acetic Acid. Vinegar which is present in your homes It happens inside. formula of acetic acid Remember this. CH3COOH. Ok? What is inside vinegar? Acetic acid. Brother there are so many names How will I remember it? Come see this table. These Then you will remember it. How? your house There is curd in it. There is milk. in that Which acid is it? it happens inside him Lactic acid. What happens? Lactic Acid. I have read this since childhood. eighth grade I also read it. if you have studied 8th So if you have come from 6th to 10th then there is a problem yes son. No problem. Why are you laughing? I had a friend who was direct from six I came in 10th. I'll tell you about it some other time Story. Ok? Besides that, lemon. In the lemon what happens son? Lemon contains Citric acid. Lemon contains citric Acid. citric what? Is it citric? Lemon Sour citric acid. And if you have any A bee or an ant bites If it is cut then it is the same thing inside both of them Contains acid. The acid we call Methanoic acid. or a lot of books Formic acid is also written inside. Ok? Now you have to remember this. These I will remind you. how to remember shall I get it done? I will remember one line. very very Acidic Orange City. Imagine this. one such The world is a city like no one else Do you live in some city? I am also from some city I live here brother. It is obvious. All In your respective city. So the city is such Imagine that, it's very acidic. i.e Very very acidic Orange City. These four You have to remember it like this. Very Acidic That means vinegar acetic acid. Orange City. What is Orange? Citric acid. Ok? These Did you understand it? Listen to the next story. Now what do you want to say? a friend of yours which is telling you, let's go today Let's close the class and not the table Let's go play tennis. Play TT. TT. So what are you telling him? No no TT tomorrow TT tomorrow will play tomorrow I have to study TT today Prashant Bhaiya is teaching me yes it is necessary okay TT tomorrow means Tamarind which contains tartric acid what is tarand brother what is tamarind There is Imli Na Imli Imli many songs have been made Son, Bollywood Bollywood people did tamarind brother okay what is in tomato hey tomorrow look tomorrow means tomato Oxalic acid is the most important What is tomato's question? It has been asked many times son, many times ok This is very true friend, I have to remember this and see no this is not for that i did not put the scenery Give it to me, I will paste it in your house, no You fools, you have to remember and listen to me I lovingly call you a foolish boy who is new They are kids, they don't know this about you and I talk about the middle, I love Never feel bad if I speak nonsense, foolish child Even if you try to apply it, what will I do to me? so I'm standing right here okay come on indicator Let's talk about what indicators are what is indicator indicator that is in Changes colour in acid or base Are. Like the son he also changed his color Was. As soon as a problem arose, he changed his colour Revenge. are you paying attention? are you paying attention? I am talking about your friend brother. You have some friends who are Was with you. but now with you Changed the colour. Similar indicators also They are like your friends. Ok? Indicators are the substances that change their colour and smell in the presence of an An acid and a base. That means they change either your color or your smell so that We can identify that here There is either an acid or a base here. Isn't it? you have to remember some names and I'll tell you I'm going to show you some tables. you remember that too Will have to keep it. As there are some Natural indicators which are obvious Yes, they are made from nature. Isn't it? such as the most The first one is litmus paper which I will tell you about I have done it. Look at the colour of litmus paper Isn't it normally in neutral solution What is neutral? Neutral Joe Na Acidic or basic is in the middle. It's in the middle. There is a child in a class who There are back benchers and front benchers in the middle Sits. yes so what is this? Neutral. Colour of litmus paper in neutral solution It is purple. What happens? Purple. But As soon as it goes into acid it will turn red. And As soon as it reaches the base it will turn blue. very nice. Besides that, another natural There is an indicator whose name is Hydrangea Flower. Hydrangea Flower Its colour is blue. If acid is applied on it If you put it in, it remains blue. But if If you put a base on it then it will be magic Will go. What will happen? The color will become pink. He used to come first, magicians used to come. Isn't it? every There are no magicians in the city who show this magic Were. What did he do? Used to pluck flowers. They used to show it. Look, I'll show you a magic trick. Flower He broke it and what did he do with it? these bases Used to put. Base Sodium Hydroxide etc. so that the color of the flower doesn't change used to go. Oh crazy people, what have you done? what is this science brother what are you talking about Are you giving the next turmeric to your mom? Everyone must know what turmeric is If turmeric stains your clothes If it is applied then it is of yellow colour but if If you ever rub it with soap it turns red It changes in color and becomes red That means when we apply the base it turns red Well it stays yellow inside the acid It remains yellow also, okay so this is simple you will remember now comes the synthetic Indicators Some indicators that human because humans are very important to us We have to keep doing something or the other in life. Some? Have to do something new. I said, no problem. So Which indicators did we create? To all The first is phenolphthalein. what is it son? Remember the name phenol, phenolphthalein. phenol is Phenol pathene. phenol your mom mop You must be planting it in the house. Isn't it? or you too You must be applying it. help out a little bit Mom's. Ok? Phenolphthalein. Phenolphethylene Remember this. Phenolphethylene is colourless. It is white. White. Colorless. No color. No color. If you put it in acid it will be colorless It will remain the same. It will not change, it will not change. But As soon as the base comes, it regains its color He changes it. It turns from colorless to pink Yes son, it's pink. Remember phenolphthalein? Colorless. Close your eyes and imagine. Colorless I poured acid but nothing happened. Base Daala Pink Pink pink pink pink. very nice. next Methyl Orange. same name as methyl orange It seems that the colour will be orange. When the acid Tell me what is the colour of the acid you pour? Bull Red. So the acid makes it red. Ok? And what does the base do? this orange Makes the color base yellow. What could I do Is? Yellow. Which is the most important? These Phenolphthalein. This phenolphthalein is very important Is. The question will come again and again. speak again I have been. I am warning you. And if you Can't read, focus is moving here and there So remember this. Pauline, right? The heart said this It is from the heart. The heart has said this to the heart that Yours is being cut again. so therefore the focus You should study with it. come come come go come come. come on come on. yes hey Your roasting and busting is done, right? Sometimes I do roasting yours. Come on. Now comes All Factory Indicators. Look at all factory indicators What happens? All Factory Indicators Vo There are indicators that change their smell Let's take it. The indicators till now were Were you changing your color or your smell? have been. Ok? How will you remember? Factory. What comes from the factory? Smoke. What comes from the smoke? Smell. so remember this do it. All factory indicators. All Factory indicators are the substance Smell change in acidic and basic solutions. There are three types of Oil Factory Indicators They are lying in your house itself. the first So is onion. Onion. Onion. When When mommy cuts onion, it smells, right? It feels very strange. do one thing now If there is a base in your house or not baking powder etc. around it Sprinkle it. Do you know what will happen to him? Who The smell of onion will disappear. Why? Because the smell disappears inside the base Onion is going to go. Similar to Vanilla The extract will be available in your home. Isn't it? It smells very nice. But if around What will happen if you drop the base? His The smell will also disappear. and there happens to be one Clove oil. Clove oil is also present It might be in your house. Now its even bigger It has a good smell. not that good It would have been. The vanilla essence is so sweet There is a smell. It smells like cake. But it is not that good. ok it occurs. Then its smell also disappears is when we put the base on it. So that means When the base is coming the smell of all three disappears It is happening. Did you understand it? As soon as the base arrives What are you smelling of all three, son? Bye Bye-bye good bye. Ok, I am going. in prayers Remember this. Come on, let's move ahead. in a flash Some questions. Yes, brothers, sisters and ladies, Gentlemen, we move on to the next round of KBC have been. And now we'll take some questions. Some? Frequently asked PYQ questions Are. This question is on the board in your school Will be seen in the exam. Come on. 2020-21 O Brother, this has been asked so many times. select the Pair of all factory indicators. All Which of the following is a factory indicator? Is? It is obvious, son. A is Clove oil and vanilla essence. this is a big fool Pallu question came. These are the question boards The exam is asking what happened? Let us go. What color change is observed when Is blue litmus added to lemon juice? Lemon Juice what happens son? What is lemon? It is acidic. Isn't it? How would it be acidic Is? Red. Red, red. very nice. Red Litmus Is added to soap. What is the soap like? Basic. I mean, what will he do with it? I will perform havan. I will perform havan. I will perform havan. no no havan do. This will change to blue color. It's obvious, friend. Let's live and see Are. out of the following which compound and Compounds That Will Turn into Phenolphthalein Solution Pink. Phenolphtylene colorless pink was the base In. Have to find the base. Which of these is base Is? calcium hydroxide is a base Is. This is beta acetic acid. so this So is acid. This is also acid. This is also a Type of base. So that means A & C This is the correct answer. Let's live and move on Quickly. Now here comes a good question This question is very lovely. carefully consider this Understand. three test tubes a b c contain the Distilled water. What is inside A? Water Is. Pure RO water which is available in your home Is. and inside B there is an acidic solution There is a basic solution inside &c. When red litmus solution is used for Testing the Solution, the Absorbed Color Change will happen respectfully. That is, if I took red litmus and put it in all three So where will the change come? Look brother first There is water. What is water like? Neutral Na Neither here nor there, nor in the middle. It is in the middle, right? Yes, the middle one. What will happen then? will you dip the water will the color change? do not very. Neutral Colors Can't change it. Remember this. So when neutral I put in red of red. if put in acid The acid is obviously red, so red is red It will remain the same. But when put in the base, it turns red It will convert to blue. Ok? So a What will come in me also? There will be no change. In B There will be no change also. Where are you coming? Which one Is the option coming? A let's see for a minute. What is this? It becomes obvious. a raid Litmus is the solution. Ok? Red Litmus There is a solution. Look sir. Which one is coming? Ok. Look at this option. what is in a Used to be? What is happening in A? This one. A No change in me. First of all, when we If the solution is put in neutral then any There was no change. A little bit of option It was here and there. Look carefully. A option to See. There will be no change. when I took acid When I put it in, it became slightly dark. Dark The color will become slightly darker. More He will not come. Red will always remain red. But when When I put it in basic it turned blue. So option A is your correct answer. Ok? There should be no confusion. A few options They were crooked. Isn't it? Crooked. The options are complicated. Isn't it? Let us go. Well, you have eaten them crookedly There are crooked ones to eat too Is there anything crooked in it? It is for eating. Come on brother, tell me the next question. next Tell me the question. This is the next question on your screen. It has been asked many times. asked many times Is. Ok? Yes sir. Tell me. a student Added phenolphthalene to three solution AB C. Solution A Turned Pink. When was it pink? Is? When there is a basic solution. Remember me Solution B remains colourless so either it it will be acidic either it will be acidic either This will be neutral. Solution TC Turn Light Pink. That means it is pink but light pink It has happened. That is, the base will be a little There will be a mild base. That means the base will be lighter. How will it be? There will be a slightly lighter base. There will be a mild base. which solution are Acidic and basic. this is basic, this is acidic, this Basic. Ok? name the nature of the Solution B. What about solution B which is It happens? What is Solution B? a type We can call it an acidic solution of. What is B? a type of acidic Solution. Done. So such questions also come up. And Son, let me show you one more question. The Stain of turmeric on white shirt turn red when the Soap is scrubbed. That is, when we wash, Your mother must be doing the washing, mother needs 1101% I know it. Mummy doesn't know science. Is No? Look at your mother, have you ever noticed that When you come back from school the first thing you do is I want your mother. Isn't it? Yours There is no such work with your mother. But You need a mommy. Mummy Mummy Mummy Mummy Mummy Mummy starts looking everywhere Are. And if I don't find my mother, how much Trouble begins to arise. Isn't it? And when we You are not getting anything, you make a sound Do you apply it, mom? I can't find those clothes Are. Mummy comes once with one hand in that She takes out the clothes and says that You were not getting this. It happens, right? So mom knows everything. even if you know science You may not know it but they know it. Isn't it? So Basically, this red color is a turmeric stain Why does it turn yellow? Because Turmeric is a natural indicator. and when the base If it is applied on it then the color changes from yellow to red Takes it. very nice. Isn't it? soap is the Basic in nature and turmeric act as a Natural acid base indicator. because of which He changes his colour. Done. Come on, brother, Let's move ahead quickly. Come forward. So Now we will study some chemical properties of Acids and Bases. First, take some acid Will read the properties. Then we will study the base. Are you understanding the property, son? Importent Is. Keep watching. One activity is big cute one which we already know in the first chapter I have studied it. one shot of first chapter The chemistry is maintained. look look Go and get it later. Just look at this now. in that What happens is that we take a test tube Are. We take an acid inside a test tube. Are. Which acid do you take, son? We Let us take H2SO4. Ok? and H2SO4 acid in Zinc. Zinc is a metal. His Add ganules. small pieces Let's put it. Ok? So when the reaction happens Do you know what happens to Zn + H2SO4? Firstly salt is formed. A salt is formed Which is what happens? ZnSO4 and beyond A gas is released. from here you know what It happens? A gas is released. look at this Gas comes out. And when this gas is put into the candle If you take it with you then this gas or pop It starts making sound. Pop sound. so tell Which gas is this? I read it in the first chapter The way to find hydrogen is the pop sound Test. That is, if hydrogen gas is heated by a candle If you take me to him then that puppy sound will sound It starts bursting from. That means which gas is this? Hydrogen. Did you understand this? i.e That is, what happened in this reaction? What happened? Zn + H2SO4 ZnSO4 + H2O This is a type of This is a displacement reaction. Remember this. Oho Remember the Reactivity series? Not there? If If not, then remember it once again. What Is? Katrina asked for a car Alto Ferrari still has hydrogen why did you get it silver silver silver silver odi lo bhaiya Brother, remember this order, now look son Why did the hydrogen gas come out here Because zinc is made from hydrogen more powerful Then he says hey go away I have come to my place If it is an area, I would have kicked him out and the hydrogen comes out. But now Imagine if in this reaction these z zn For example if there was some other metal in place of There would be copper here If there was copper here What happens now? Tell me what happens now? Now what will be? Tell me will there be a reaction now? Oho Stupid boy look where is Copper? under hydrogen. Isn't it? So what? Yes it won't happen. does not display at all Will get it. It is not that powerful. so no Reaction will be formed. But what can I tell you Was you telling me? With the help of this reaction, we can I understood that whenever an acid reacts with a metal If it reacts then first salt will be formed and then Hydrogen gas is simultaneously formed. What Did you understand this? Do you understand this I? And what is the test for hydrogen gas? Is? pop sound test you already know that Is. ok sir? so now here I am finally I am telling you that whenever the acid reacts if it reacts with metal it will form salt and This will simultaneously produce hydrogen gas, which I just told you just now. So you should always remember this thing. Ok? Hydrogen gas is released, which is important. What is the test for hydrogen gas? The papsound test is also important. Let go Next reaction. How Do Metals Carbonate and Metal hydrogen carbonate react? now the next The contestant should be called. The acid was standing. Metal carbonate comes in front of acid. The second one is his brother metal bicarbonate. Metal What is a carbonate? carbonate would is CO3 carbonate and bicarbonate HCO3. Ok? So for example, this is metal Carbonate and this is metal bicarbonate. ok sir? So brother, these are different. Now these The reactions of both are the same. If the acid Any one of these two brothers may come in front. Acid says look first of all salt I said I will make it, okay then what will you make After that I will make water, I said ok You made water, then what will you make, then carbon I will also make dioxide, I said okay Brother what a thing, these three things will make acid He says, brother I will make three things now. firstly i just made salt plus salt plus hydrogen was made of it Now I'll make three things here. If I have salt for example Na2CO3 What will happen if I react with HCl Son, understand that first the salt will become salt How will it be made? Sodium and chloride. So Salt of sodium chloride was formed. His Water will be formed simultaneously and CO2 simultaneously will form. Ok? Do you see any other reaction? Such as sodium hydrogen carbonate. Its Same reaction with him also. also with this NaClH2CO2. Remember the gas that is released here What is happening is carbon dioxide. Now You will tell me the test for carbon dioxide what was it? And if nobody told me, somebody If he did not tell me then it is for me A surprise nearby. Are you understanding? this dumbbell Hey dumbbell, listen to me. if you got it wrong I told you if your knowledge of the first chapter is weak It came out. Look brother, it is obvious. Lime Water test was done. I hope everyone remembers you will be. If you don't remember please remember Buddy. This used to be lime water. test it It used to happen. If CO2 was passed through it, it would be produced was calcium carbonate. i.e. lime water Terns Milky. This was the test for it Was. Lime water test. It is very nice isn't it This is clear to you. That means if ever Will the acid react with metal carbonate or metal What will happen with bicarbonate? Salt Water CO2. What is the matter? Very true. now here But here comes a very important point. Mark it with a star because I like this It seems this is asked many times in your paper. May go. What is the point? we know that if we pass CO2 in lime water So the lime water becomes milky. Another one on the There is a case. If I pass access to CO2 Should I do it? That means I am giving away CO2. give it to me I have been. I am giving it to you. do not finish it remained. What will happen now? That Joe Lime Water Milky way it will come back. i.e He will become normal again. Why so? Now let me tell you the reaction. Look when my Calcium when lime water turns milky Carbonate was formed. become water together Had gone. Now, if I have more carbon dioxide and I am carbon dioxide I am giving it. So what happens now? this which is it calcium carbonate or not? it gets converted The calcium bicarbonate will go inside. Calcium Hydrogen Carbonate inside Inside. Ok? so now this makes Calcium Hydrogen Carbonate. And this which Isn't it calcium hydrogen carbonate? It is soluble in water. what would this be Is? Soluble in water. That means it is in the water I will get it. So the milkiness of white color I had come to the solution due to formation Of calcium carbonate it disappears. That means see You can show the magic twice. you first Take lime water. Passes CO2 and becomes white in colour Will go. Then you pass more CO2. White again The color will disappear. So today we will talk about chemistry I am not reading. You have class today son Magic class. chemistry class cross Magic class tick. Ok? Yes. So today I have my own magic class, son. of magic I enjoy the class. Okay, did you understand this? Did you understand this? Very true. Now coming to the next On the reaction side. Now understand the next reaction. Suppose there is an acid and there is a base. If these What will happen if both of them react and How will it be made? Whenever an acid and a base are we don't meet each other, one fire, one water, one fire When both the waters meet, then brother A dangerous reaction is bound to happen. Dangerous Reaction It has to happen. Ok? So we call that the same reaction It is called neutralisation reaction. when An acid combined with a base it leads to Formation of corresponding salt and Water. This acid base reaction is called Neutralization reaction. because an acid Yes, there is a base. Both of them came. What happened? Neutralization. Ok? became neutral Now that. So look, here is an example of this. As Assume that HCL is hydrochloric acid. If you react it with NaOH then what will happen will you make it? A salt will be formed. NaCl along with Water will be formed. Water. Uncle ji give me some water Give it. My throat is getting dry. that is, what Can I speak? acid plus base will Always form salt plus water. quickly Tell me in the chat. Is this what I say Can I? Yes dear. Can I say this thing? Yes dear I am asking you only. are you coming to understand In? Look, there are three types of students. One is a good student, one is There is a thick student, there is a bad student. There are three types for people. But I know another type of student There are. Number four is back bencher. Isn't it? These are the students who don't take notes Are you making it or studying? they feel it seems that the movie is playing and that picture are looking. Eating delicious food, Eating popcorn. It's not a cool picture Back Bencher. Well it's a good thing that the back Benchers are doing some great things these days Are. I have been a back bencher myself. So These backbenchers are very good these days I am working. so if you are a back bencher No problem. Yes you can do it. just little Friend, focus on your studies. exam is coming have been. I know you at school I want to have fun. Look at the brother at school I had some fun. Prashant should come and study It has to be done with brother only. you also know it So brother, read it, you are getting a chance every now and then Is. Let's go to the next reaction. now i'm on acid I will bring it in front and make it stand. Metal Oxide. What is metal oxide? See An oxide of a metal. such as magnesium MgO oxide. What has happened? Metal Oxide. So if I take any acid I will bring a metal oxide and place it in front of me So do you know what he will make? forms salts and Creates water. Ok? so like for This activity is also an example. Star Mark do that if if i cuo this would be copper Oxide: Its colour is black. this is us I read it in the first chapter. who doesn't remember yes, I am telling you. If I react to this I will do it with acid, then you know what will be? Firstly it will convert water into H2O and then it The copper will combine with this chloride and this It will form CuCl2. what will you make? CuCl2 Copper Chloride. and the colour it is It is bluish green. You can also say green You can. It is of green colour. Correct Is? You have to remember this because you asked It is said again and again that this black color is green Why did it happen in me? Due to formation of Copper chloride. ok sir? very nice. Now if you observe carefully, a metal oxide A metal oxide with an acid Giving salt plus water. now something is wrong Are you feeling it? such a fuss? Tell. of thinking Tell. Friend, I feel a bit confused It has been happening. tell me one thing, this would have happened Was. Look at what I am going to write Son, you don't think I wrote it right I have been. Tell me, this is also there. Isn't it? Now Bhaiya acid here as well acid here as well Salt, water here too. So what is this It is a metal oxide, it reacts like a base Used to be. Yes. And you should note this point What we have to do is to give the metal oxides R Mainly Basic in Nature. how are they Son? Basic in nature. it is a different thing that we If you read the next chapter, you will read this fact in it It will be denied. will be proven wrong. Science is like this. He tells you first You must have read it. class ninth if you remember Is. Bohr's Atomic Theory. then comes another Is. No no no it is wrong. wrong is wrong Is. Then comes the next theory. this one Theory. No no no it is wrong. It is wrong It is wrong. next hey brother right at once Study the theory. What should I do, did I go wrong? So It is the same in this too. right now for now this is it It's basic. It will change in the next chapter. Correct Is? Let go. Now let's study the chemical properties Off base. Now I have seen the reaction of acid There is curry of base also. like the base reaction if i remember with metal Does not react with all basis metals Do. Which are strong basis. strong bases such as sodium Hydroxide. This is a strong base. Magnesium hydroxide. This is also a Kind of strong bass you can say. So there are some strong bases that Let's react. Ok? And how to react Let us do this reaction, it is very important. Base Plus Zinc. What is zinc? It is metal. Now This will make a salt and at the same time Hydrogen gas will be released. Ok? Now this Why is reaction important? Because The name of the salt that is formed in this You have to remember this formula also Have to remember this. We call it sodium Zincate. Sodium Sodium Sodium Zincate. How will you remember? I remember my time I used to do natu natu natu natu natu janato natu natu natu jaanatu come I will bite you I did not want to say it, but I remember you like this we used to do dance in school, come to me Should I cut off the cringey things you did in school? Inside, I mean that was the time in school when What used to be fun for us is now happiness no, what was the fun at that time, we used to joke I used to hit you and ask you to tell me which gate is this? There is a place in which no one can get out of it. So, everyone used to ask, what kind of gate is this? So we They used to say Colgate. C Any of Colgate I couldn't get out and I was happy even in that. Isn't it? So Natunatu come do you know. Correct Is? So what is this? Sodium Zincate. How made? Sodium hydroxide zinc. What came out Gave? Nattu Nattu. very nice. Na2 ZnO2 which That is your sodium zincate. very nice. And Hydrogen gas was simultaneously released. So remember metal plus metal plus what? Metal plus say metal plus hey bass. Now There is a no condition here as well. This is the base They should be alkaline bases. Now Brother you will ask what is alkaline base Is? Alkaline bases are those that are Soluble in water. Remember this. alkali base r Those bases that are soluble in water. Which is They are soluble in water. to them we What do you say, son? Alkali base. Very Excellent. Have you arrived? Is it clear? Alkaline means. Ok? next. Reaction of non metallic Oxides with Bases. look at what the basis was isn't it metal carbonate metal Does not react with bicarbonate. Ok? Now the next reaction comes in the base I'm taking it and the front of the base has a non-metal Oxide. What was there? Metal oxides. What's here? Non metal oxides. Non Give an example of metal oxide. As Add an oxygen to the carbon. Carbon Dioxide. What is this? Non Metal Oxide. So look brother like non metal Should I make the oxide react with some base? with. You can take this base as you like. what is this Son? Say calcium? Calcium Hydroxide. Or take this one. NaOH What is also a type of? It's base. Ok? So when there is a reaction with them then What happens? A salt will be formed and the Water will be formed together. What will you become, son? Salt will be formed and along with the salt, water will also be formed. will form. i.e. if a non-metal oxide is If there is plus base then salt or water will be formed. Now Just look carefully. here also I have some Looks like a mess. Acid plus base salt Plus water. So, what do I say here This non metal oxide can react as A. Acid. Can I say this thing? If you understand then tell me. It went in the send. brightened mind Shined inside. Is it cleared? very nice. This is it. Isn't it? That is, it is like acid What are you doing? It is working. So we say we can say that those who are non What is metal oxide like? that one We can also call it this type of acid. Ok? Remember these two reactions, son. You already know this. when its reaction If this happens then it is a lime water test Went. And what is this second reaction SO3 + NaOH Makes it? sodium sulphate and together with The water is released. Remember this. that much It is not important son, but remember it. Sometimes these questions are asked in the paper. Come on brother, let's move ahead quickly. Beyond this What is? These are bases as well as acids Went. Ok? So a complete summary of this Is. I am giving you this summary chart So that you can revise anytime quickly From. So you can know these with the help of this summary chart. What can you do with all the reactions? revise it Get it. All these things that I taught you It is already given in this entire summary. Ok? So my acid reaction happened. The basis was the reaction. Neutralization I also read the reactions. Neutralization What was the reaction? Acid plus base Salt plus water. Going Neutral Case. ok sir? This is clear to us even Done. Now we are coming to some questions Towards. and after the questions we'll go to some Towards important things. Come on. a question Let's see. The question has been asked many times Is. in an experiment set up given below it is observed that passing the ah gas produces in the reaction that follows Solution X. The Solution X First Turn milky then colorless. That means this of inside asking you if there is a gas Is. Which gas would that be? there is a gas Is. Which gas would that be? if you don't It is visible. I zoom in a little more There will be a small visible cone on the screen. In this I have been told that I have reacted dilute hydrochloric acid plus I What have you taken of sodium carbonate now? tell me which gas will come out oh this is it I have seen the reaction, acid plus metal Carbonate salt water CO2 is the same gas is carbon dioxide i.e. this gas is X I know who X is, X is unfaithful but Here is X CO2 Here is X CO2 good Those who are math teachers, they don't have the habit it happens that every now and then find the value of x Find the value of x. I don't have one like that He was a friend. Ah, I won't take his name anymore. Is No? I won't tell you his name It was Bhati. But the Bhati was once given a class I stood up and asked. now actually incident I asked him to find the value of x? So he said sir in my life value of x is zero? after what happened to him That is a different matter. But yes, he said that. Let us go. which of the following gas is released When baking soda? Baking Soda Next I will read it but for now just understand it like this. Baking What is soda? It is a type of base. One Type of base. Ok? added to the Hydrochloric Acid and How It Can Be Used Be Identified? Look at baking soda What is the formula? I tell you this I will give it. Isn't it? baking soda formula Let me tell you. NaHCO3 This is it. i.e. this sodium hydrogen It is carbonate. if sodium hydrogen carbonate reacts with hydrochloric acid If he does this then which gas will be released? CO2 Carbon Dioxide. clear? how to identify will you do it? Lime water test. very nice. next. Hydrogen gas is released. It Produces a pop sound with a burning Mastic. Well, we had to match it What? Oh ho. ok this one is a b c d There was a question. I thought it was theoretical This is a question, so what is it, MCQ, friend? Its answer is coming tiding tudding tudding ting tiding tiding tiding tiding tiding tiding tiding sea let's move on now what Do all acids and bases have been common now Let's see brother what is the same between acid and base What is the matter, what is common, so look brother What is common between acids and bases Both are good conductors of electricity there is an activity if you are a water Do you take pure water from pure water If you pass the electricity there will be no electricity She will say that I am not nearby but if I take acid Or I will mix the base, electricity will be nearby. Why? Why does this happen Tell me brother. why would it be Is? ie what if i? dilute HCL Or if I am taking H2SO4 then what is happening Is? The bulb is glowing. But if I Am I taking any other compound or that acid No, either it is not the base. Any It is a normal compound. taking pure water Am. So electricity does not pass through pure water I would do it. Brother, remember this. Glucose It does not pass electricity even inside. Ok? It does not do this inside glucose. of alcohol I don't do it inside. But acids and bases have What's special? near both acids and bases Contains ions. I told you, right? going into the water Acids release H+ ions and bases release OH Releases negative ions. and to you know how to pass electricity Ions are very important. Ok? so So Acids and Bases Can Easily Conduct Electricity. so remember both acid and Base R Electrolytes. which means that They can conduct electricity. Acid End Basis both products. Ok? One a hydrogen ion and a hydroxide ion Makes it. Ok? i.e. when it is put into water When we put it in, it breaks and this What is? In H+ and one OH in negative. Now I have a question here. You will tell me. Value Look, I don't have water. I am in Rajasthan I am from. The joke is done. I am actually I am from Rajasthan by the way. Butt butt bat. Our There is plenty of water nearby. people who say this There is no water in Rajasthan. come to you Should I turn around? There are such writers, let me show you. Meaning, suppose I don't have water. So Can an acid or base exist without water? Will you show the property? yes and no do. acid and base can only show there Property during with water. Why? Because they dissociate in water only. Are. break down and H+ ions or OH negative give ions. If they don't have water What will he do if he gets his son? not that I will give. and a very sweet one of this There are also activities inside NCERT. in that What happens? It is written here. We What do you do? We take a litmus paper Are. Take blue litmus paper and dry it Litmus paper has no water in it. and HCl The gas which is present in hydrochloric acid is It is also dry. make him pass through it Are. Do you know what happens? logically what Should it be? Blue litmus converts to red Should be. But it doesn't happen here. Here But it doesn’t happen. When we use dry blue litmus If you are taking paper then there is no change in color It is happening. Ok? But when I'm in the moist blue I am taking the litmus paper. That is, I have Gave me H2O. So now this is litmus paper It will convert from blue to red. This means both acid and base Can show their property only with water. Can't show without water. you noted I must have done this, he is also like you. When Guests come to your house. Yes sir Uncle ji. ok uncle ji. It's ok uncle. Thank you uncle. oh no no uncle uncle Why are you giving this money? hey uncle Why keep it in your pocket? oh no no no No uncle, uncle. And as soon as the family left Uncle has given so much. ₹100, ₹200, ₹300 I gave it. What's left? left over biscuits Are? Mummy, can I eat a biscuit? yours The behaviour changes. You change. Isn't it? So, similarly it separates in water and separates without water. So, remember Keep. Remember, nothing happens without water Can. Why can't it happen? Understand the reason now. Now understand the reason. Acid releases H+ ions only in Aqueous solution, not in dry form. i.e The H+ ions of HCl dissociate Are. Dissociate means they break. Ok? And When these are ions, H+ ions, when these If we combine it with water then this is what we make is H3O+ And we call this hydronium ion. what do you say son? We call this Hydronium ion. Ok? Hydronium Ion. And actually because of these ions In that case, he would have been able to show his properties Are. And same case happens with basis. The bases will dissociate and they will be OH negative Will be converted inside. Do we understand this did I come? Did you understand this? Ok? Tell me quickly, did we understand this? We understood the whole thing. Beans The base is also written here. when bases is dissolved in water hydroxide Ion R Produced. Isn't it? When Hydroxide ions will be produced only then What should he do with his properties? Will you be able to find it? will be able to do the show. and it is also written Bases that are soluble in water are called Alkaline. What do you say alkaline? Which is I have told you. now here is a The question arises brother what is strong base? And what is weak base? or what is Strong acid? What is weak acid? His I will talk about it. but before that a There is a term which we have been studying. Since when have you been studying? we are going through the last chapter I have been studying since. The name of that term is What? A dilution or concentrated. So What is the difference between dilution and concentrated It happens? So understand it, son, dilute it. What does dilution mean? when we Add water to the acid. say this Isn't it? But this is wrong. If I get any If I want to dilute the acid then sometimes I use water I will not mix it like this. This is wrong. These The method is wrong. What is the correct way? I take water and drop by drop I drop the acid in it drop by drop I am going. So this is the method. Remember the acid Add it drop by drop into the water. Why do you do this? Because if the water What will happen if you put it in acid? Exothermic There will be a reaction and Isn't it, son? The bad year is going away anyway Everyone's. Anything can happen to you too. So remember this. Ok? So the question is Why does dry HCl not change the color of Dry litmus paper? I just told you This is the question. Why? Because without water will never release H+ ions. Let go Bhaiya now comes the strength of the acid end Base. See Dilute Acid Concentrated Acid Forget it, he is different. How much water is there, how much There is no water, that is it. now a thing happens Strong acid weak acid. Strong and Weak What are acids? Understand. Strong Acids are those that completely dissociate when Dissolved in water. when we put it in the water If yes, then it is falling apart completely. If If he is completely broken then understand that What is? It is a strong acid and Incompletely inside the H plus ions It breaks and dissociates, what is that? Weak acid. So remember, remember strength What does it depend on? in what way he Is it breaking? So look what is strong acid Is? Completely ionize in aqueous solution Release high concentration of H+ ions. Strong Acids will donate more H+ ions and strong bases Excess OH will give negative ions. While the week What is an acid or a weak base? which is partially It will ionize. Ionize means the same thing Dissociate means to break up. you remember the term Keep it dissociated. release less concentration of H Plus and OH negative ion. Low concentration It is inside it. It is obvious. Now The most important thing here is to remember the example Keep it, son. Names of some strong acids Remember this. such as hydrochloric acid, Is HClO ok? H2SO4 sulfuric acid, Nitric acid, HNO3 and some strong Remember the names of the bases also. such as sodium hydroxide, potassium hydroxide What is? There are some strong basis. Ok? Calcium hydroxide is also There is only a strong base. now they come On weak acid and weak base. Now for weak acids Also remember the names which are in your syllabus Is. acetic acid which I started you with I told you. CH3COOH. Besides that carbonic acid. Carbonic Acid is what you drink, right? what to drink You? C You only drink cola, right? something else then Don't you drink? are you there brother? yes brother. have you not grown up Are you drinking anything else? yes very much Excellent. So it contains carbonic acid. And there is a weak base. has a weak base What? Ammonia hydroxide. NH4OH? NH4OH is ok sir? What is this? a type has a weak base. Remember everyone's name. Why? Because it would have been useful in these questions It is ahead. Let us go. Now moving on to the question On the side. Why is HCl considered as a strong Acid and CH3COH as a weak acid? As such Why? Why this discrimination? Hey brother, we What to do? Hey brother, what is in our hands Is? HCL gets completely dissociated when Dissolved in water. butyric acid CH3COH ie acetic Acid does not completely get dissociated. So That means it has more H+ ions, it has less H+ There is no discrimination, brother. See the truth Is. This is the truth of life. Next question. What is? which of the following is a week Acid? Which of the following is a weak acid? appear It is happening brother. It is visible. There is something in this There is no need to even think. Directly It is visible. Let's move on. Now it comes Universal indicator. Look Universal What is indicator or pH scale? We are starting to read about it Are. What is the pH scale? So far we are Were looking at who is acidic, who is basic Is. Now we will also see how acidic it is And how basic. how who is more powerful yes, who is less. so the pH of if I tell you Should I tell you the full form, the full form of PH is is the potential of hydrogen. potential of Hydrogen. That is, about PA H+ ions Tells. Who does it tell about? H+ About ions. Ok? of H+ ions He is telling about it. Now the question of PH There is a reading, right? What is that? pH The reading is from zero to 14. This to all would know. If you don't know then I will tell you. The PA looks something like this. this would have been It is zero. This is 14. Ok? this zero These 14. Consumption takes place in the middle. Ok? So Here 1 1 2 goes on like this. Here But it goes on like this. Ok? so this what is the complete list of all the 1 to 14 it occurs? There is one such sheet. Now this to We talk about the pH scale. Now understand, son Remember one thing that if we test someone do any material and if its PA reading seven i is in the middle seven means that It will be neutral. If the intake is less than It will be acidic. If the consumption is more then the basic will be. More than intake Less than basic intake Acidic. Ok? Ok? That is, as low as The more acidic the reading, the better. as low as The more the reading, the more acid. now the kids in this Where do you get confused? look kids pay attention Understand it from this. I got confused here. PA Yes, I am assuming that. About PA H+ ions I tell you. So the kids say bhaiya jo The stronger acid is, what is its PA will be? I'm saying too much It is a strong acid, its PA will be one. But Bhaiya it has more H+ ions in it so His PA must be higher. I said No the PA scale is upside down. which has more H+ If ions are produced then the PA reading will be low. Did you understand? drink the one which is more acidic The reading will be that much lower. Got it? Joe Strong Those who have acid will have very low PA reading. 1 2 3 will come. Those which are weak acids will have 4, 5, 6 will come. Similarly, those who have weak base will have 9 10-11 will come and those who have a strong base 12 13 14 will come. That is, in terms of basis, as much as The stronger it is, the more it reverses in acid Is. The less, the stronger. Is this the thing Did you understand, son? Its questions also so that you get clarity right away will go. Tell. Besides this there was one more thing is the universal indicator. Universal What is an indicator? This is just for pH I have just added colour to it. color in it It has been installed. By colour so that you can identify it. Ok? A universal indicator is a Mixture of several indicators. and why is this It happens? it shows different colors at different PA values. Now how do you remember the colors? Is? Vibgyor reverse vibgyor. VIBGYOR Write it upside down. Write VIBGYOR in reverse. V I B G Y O R. Ok? i.e. if PA 14 If yes then color is blue i.e. slightly bluish color will be. And what if there is a forest drink? Red and if it is at number seven then it will be in the middle Which one is coming? at Vibgyor Green is coming in the middle. That is, number seven What will happen to the PA? The colour will be green. What colour will it be? Say it will be green. so how Will you remember? VIBGYOR. if it is on this side Blue, this side is Red. What's in the middle? Green. Let's ask some questions. with his help And you will get more clarity. Let's take this question Do it and tell me quickly. Who could do this to the question? This is a bit tough question. Let's see. a below table has an information Regarding pH and the nature of the four Different solution? which of the following Is the option correct? Which of these is correct Is? This has become very simple, friend. In this So what was difficult? Look, lemon juice. Lemon What is the juice like? Acidic properties of lemon juice If it happens then it is less than PA consumption. so the thing It is perfect. Milk of magnesia. Milk What is of magnesia? to whom no I will tell you the address. Milk Off Magnesia is basically magnesium Hydroxide. And what is it like? These It is basic. So its pH is also basic. Ok? Gastric juice. gastric juice What will happen? what is the colour of gastric juice will be? The colour should be red. Why? Because Gastric juice is the juice from your stomach and It is very acidic. so the matter is This is also correct. Pure water color here Yellow is shown. Show the color of pure water have you kept it? This one has yellow and this one is neutral Is. So brother, this is also correct. so by the way So look, basically it will be almost all three Correct. because if you have read the back If you have seen it then look at the reading at number 10. It is bluish green. Isn't it? What's here? It is blue and if you look at it, it is pure blood or is it pure water There is a slight tone of greenish yellow colour. And if the pH is here then it would be reddish color Is. So, I need all the options but the best The option that seems correct to me is C. It seems to me the best option is C. ok sir? so mostly i feel this way Used to be. Do you know if there is any problem with the question yes. My answer will be C in this. Let go Let's move ahead. next question. The Decreasing Understanding the order of the H plus ion concentration. This is a very good question. Give us four things have been kept. The pH value of all is given. And It is asked that which has H plus ion The concentration will be higher. H plus ion is Directly proportional to acidity. Is No? The lower the pH of a will be acidic and the more H+ it will contain There will be ions. So first of all, let's write Which has a low pH? Gastric juice. So the most First number two and then number one will come. then after that number three will come and then again Number four. Ok? That means, what happened? Decreasing order of acidic power i.e. H+ Ion. That means the answer will be 2 1 3 4 like this Logical questions are coming in today's time Are. Ok? 2 1 3 4 ok, that's great. next. to solution m and n give red end Blue color respectfully with a universal Indicator. That means there are two solutions m and n. And what is that? They give red and blue color Are. Ok? in v solution will the Hydrogen ion concentration be more? o big It's simple. Where the color red appears, that is It is acidic. then the hydrogen ion The concentration will be higher there. Ok? And What is? If both m and n solution R Mixed. Both have been combined. an acid Yes, there is a base. Both have been combined. The The resultant mixture is tested with a Universal Indicator, It Turns Green. When was it green? When was it green? Seven When the number becomes neutral at PA Solution. What is the nature of the salt? What will be the nature of the salt that is formed? They It will be neutral. How will it be? Neutral. Why would it happen? because what is acid plus base Makes it? Salt. and pH if green Caught you. very nice. Let's go sir. Now come on Importance of pH in daily life. Ok? After this we will move on to the topic of salts Son. The topic of salts is very important Is. The question is 101% sure to come from there In your paper. So understand this now I will read it on salt. ok sir. Come on. What is of PA? Some are five or six points. What is the first point? Digestion of our stomach Acid is very important inside. then Your digestion will be done. because our There is a hormone in the body. Hormones No, there is no enzyme. you would know Pepsin. Pepsin in an acidic environment It works the same. Ok? So remember that Hydrochloric acid is found in our stomach Is. And the pH of our stomach is how much is a? between one and three It happens. But what happens when? Us Acidity occurs. What do we take then? I take ant acid. why do you take it son Ant acid? because ant acid is a type of There is a base. more in our stomach I got acidity. What will happen if you add base? Neutralization reaction takes place. and one more antacids which we prefer What is that? that is magnesium Hydroxide means milk of magnesium. As I just told you also. Correct Is? Next is its soil. Look, son. Soil The pH of your soil The pH ranges from 6.5 to 7.5. Sometimes What is Kabbhaar? Soil is more acidic It happens. When the farmers harvest their crops What do farmers do if it gets spoiled? Are? Let's add the base to it. and know who What base do you mix? They mix it up quick Lime. What do you mix? Treated with Quick Lime and slaked lime. Add quick lime Or add slaked lime. from both of these What happens? the soil which is made from The question has just come. just this year There is mud on the board, what happens to it Is? It gets neutralised. or else if If basic soil is there then what should be the soil She goes? It becomes too basic. PA It becomes too much. Isn't it? seven to eight goes. Then what do the farmers do? then he Gipps mixes it up. What do you mix? Gypsum. We will talk more about gypsum We have to do it too. Ok? Remember this. These It is very important. Mark the star. Next up is To DK. have cavities in the teeth Are. So how do you prevent it? Why Do you feel insects? because in our teeth What happens? more acidic environment gets formed and the bacteria that are They start eating our teeth. What do we do? Apply the paste with a brush. The paste which is toothpaste is basic in Nature. What happens? Toothpaste is basic in Nature. So remember that when our pH is lower When it goes, our enamel which is outer The covering gets corroded. seems to be breaking down Is. So what do we do then? Toothpaste is Basic in nature and neutralised acid. That is, he neutralizes it and says I am here badu, you chill, I am here fine it's our child you're fine next comes Its blood pH is higher in blood pH The pH of the blood is nothing It should be 7.35 to 7.45 because If there are too many enzymes in our blood We have to keep those enzymes alive, so this pH It is important that if this pH is disturbed then you too you will get spoiled ok next comes the plant And animals are obviously talking about the soil I have already told you, haven't I? that the soil is also more acidic It is not right and too basic is also not right Would. Next comes the Honey Bee Bite and Remedy. Have you ever been stung by a bee? Honey Katya Is. Meaning, not honey, sorry, I have bitten honey as well. Isn't it? Look brother, if a bee bites So it puts acid into your body. Now, there is jealousy. so what does your mom do Was? Your mother would bring baking soda Was. She used to bring baking powder and rub it. Why? because baking powder is Nor is it the nature of your house Basic. Now that's acidic and that's basic Neutralization reaction. Got it? So this is the reason baking soda is applied to help you Neutralization happens and you get relief meet. Next comes acid rain. Acid Rain Why does it happen? You must have heard about Taj Mahal It's acid raining. Why? Due To There are some gases. such as SO2, NO2, SO3 These are some gases. what are these gases Do you do it? meets water, reacts and they mix with the water and come down. Who Are they sea acids? H2SO4 HNO3 These acids These acids come. This is why you saw The Taj Mahal was deteriorating. It is for this reason that Used to be. Ok? So what happens? Joe Raines It is water if its PA is below 5.6 If it goes away then consider it as your acid rain Skin can also get damaged. If you're on that rain If I am taking a bath then your skin will also get spoiled it occurs. Along with this, aquatic life which If it happens, it has an impact as well. Let go Brother look at the question. Answer to this question Two quickly. give answer to this question Quick. Let us go. Why Does Toothpaste Contain Basic substance? what will happen if the pH of mouth is lower than 5.5? if these What happens if the pH goes down? Our Jo Enamel brother what is that outer covering It happens? She will start breaking down. Isn't it? and our Teeth will corrode and get damaged. And What is in toothpaste? There is a base. What does the base do? It neutralizes So that our teeth remain healthy. so They say it morning and evening. Ok? and many people People ask me what is the best skin care Tell me your routine. One such skin care routine Which brings glow on the face. need a globe earn money the globe will come automatically ok yes your favorite celebrities no if you see his old photos You were not visible but when it is okay then understand the matter that is very important come on next question how Does a sting cause pain and how it can be Neutralized is obvious B What is acid in the sting of a sting This happens because it creates pain for us It does but when we apply baking soda so what is that, it is the base He neutralises it. next question a farmer finds that the pa of h so The soil is very low i.e. acidic PA. Correct Is? which is affecting the growth of the crop name any two substance he can use to Neutralize. I just told you if it is acidic soil So either take quick lime or slag Take lime. CaO or CaOH2 is there any problem Not there. write the chemical equation of the Reaction. i.e. its chemical reaction you guys Write it down and tell me. I'm giving this to you brother homework that you tell me and do it Because this question is asked many times too It is inside the paper. this reaction comes Are. This is the reaction. Ok? These You have to react to this question Write yourself or write the reaction of quick lime with any acid or with slaked lime Write the reaction with any acid. Correct Is? Why is the intent to maintain the pH of the Soil between six to eight? If you need growth If you want a plant then this pH is important Because the plants that are there grow easily Let's do it inside this pH. Let's start g tiding Tidding Tidding Tidings are growing now Finally, Salt is as important and dear as Towards the topic. The next half hour is for you. This is going to be very important. Because You will read the entire Salt within this half an hour And this salt is the most important part of this Of the chapter. Ok? The last portion is butt Most important. Look brother, the first thing is What is salt? Salt is a type of ionic It is compound. How is it made? There was an acid, a It was the base. When they mix together they form salt Gave. Ok? very nice. How did it become? Formed by neutralization reaction. Ok Yes? We understood this. That means here An ionic bond is formed. So remember that Salt is a type of ionic A compound that is composed of a cation and an anion It is formed by the meeting of. The cation is Positively charged. The anion is negatively charged Charge. In the next chapter you will read about metal non Metal. Just chill now. as much detail as we No need to read. Ok? Now understand. There are different types of salts too. One One is an acidic salt, the other is basic Salt, one is neutral salt. How Will you find out? I tell you. Assume one It is a strong acid and a strong base. among themselves What will you make if I meet you? Neutral We will make salt. but if a strong acid and if the base is weak then what kind of salt will form? Tell. Say. Acidic salt will be formed. Did you understand this? then neutral salt It will be formed when both are strong acids and Have a strong base. but acidic salt then It will be formed when there is a strong acid and a weak base. And basic salt will be formed when there is a strong base And it is a weak acid. Did you understand this? I will tell you examples of this, son. Come on brother Strong Week or acidic acidic salt neutral salt Basic Salt. Now listen. Now I'll give you some Let me explain with the help of an example. For Example: if I take HCL. Should I take HCL? What is? Strong acid and what is this? Strong base. Now when you combine these two If you make the reaction happen then it will form NaCl as a Salt. So what would the salt NaCl be like? It will be neutral salt. Let's take another example I am. Now I take it here nitric acid. what is nitric acid Is? HNO3. Ok? And I take the base KOH Potassium Hydroxide. This too Strong acid. This is a strong bass. Now this which These two together will make salt, that Whatever salt is coming must be KNO3 It comes in the form of salt. Isn't it? potassium nitrate the salt that comes will also What will happen, tell me it will be neutral. Very Excellent. Let us take some more examples of this. Like now we have taken some other good one Let us take an example. we took this Aluminium. Not Aluminum Not Aluminum Sulphuric Acid. Let's sulfuric acid strong acid Is. Zinc hydroxide. Zinc What is hydroxide? It has a weak base. Now which Salt has to be made, how will it be made? Acidic Salt will be formed. Did you understand this? One Let us take another example. what do i do now Am? I take weak acid. Such as How is acetic acid? It is week. If I Let me react it with sodium hydroxide With. For example, I will tell you I will show you. CH3COOH + NaOH What will become now son? Now Joe Salt First of all, remember this reaction too Son. This reaction has been asked many times. Ok? This reaction has also been asked many times Is. What kind of salt will this salt be that will be made? Tell? This salt would be basic, say, because This strong base, yes this will be basic. so this You have to remember how salt comes into being Are. Like let me show you the question. salt is Formed by the reaction of strong acids end weak base. How will it become? Acidic will form. How will it be? C will become acidic. Very Excellent. next question. An Aqueous Solution Of A salt shows an orange color. is a salt and If his pH reading was measured, then it What colour is it showing? Orange. of Orange what does it mean son? I had told you If red has it then it is acidic. Isn't it? Danger. when a drop of universal Indicator is added to it. this salt is Now this acidic salt is formed by How would it have been made? Strong Acid and Weak Base Must be made of. It is obvious. so tell what is it brother? C Option Strong Acid Weak Base. Let's go sir. next question. complete the table By writing the nature. Now this question also I come very often. Look what's in it now? In this you have to tell the nature of everyone. As Strong acid, strong base. So how is the nature will be? Neutral. Strong acid but weak base. Whatever happens, it is a weak base. this week It's base, son. Ok? very nice. so how will form? Acidic salt will be formed. Weak Acid Butt How to make a strong base? Basic Salts will form. This is also a weak acid and this is also weak It's base. Now when both weeks have come then from back will become neutral. does this matter to you Did you understand it? I am not scared. Ok? ok very good. Now there will be a child. which this what I just The action was caught on camera and its time stamp he will write in the comment and will write I almost got scared, see, write it like this I will have a baby, should I show it in the chat right now? Now let us come to Salt I have to study the types of salt and its formation First comes common salt common salt What is it that we eat, the salt of the country How is salt formed i.e. NaCl? If I If I tell you the reaction, then that reaction forms HCl and NaOH It is formed by its reaction. but basically joe NaCl is found in nature. i.e You will find it in water also. lots of It is also found on mountains. every gets the place. So what is the use, son? of Common Salt. Used in cooking. Cooking It is useful in. Everybody uses it. Help In Food Preservation. That is, if you like pickles If you want to preserve it then add salt. Ask your mother. D Eyes Road During Winters. if you add salt The ice melts quickly, doesn't it? Yes. So what will be? If you add salt then the ice will melt quickly It will melt. ok sir. next raw material for Making Products Like Sodium Hydroxide, baking soda, washing soda. We will talk about that now. Now! Why to fear when PK bhaiya is here Buddy. I will look at me, you just chill Tax. You chill. Now the best is coming Importent. It is just as important As much as for you. That means you Papam. Ok? how much is your dad I will sacrifice for you. and you You must be wandering here and there. And remember this Nobody in the world tells you that you are not can do it. you have confidence in yourself Needed Someone is saying we can't do it. You Tell me, I will show you by doing it. because I've I have heard it a lot in my life, friend. once a student I had a student who had good marks Could not enter class 12th. he speaks Hey friend brother, I have lost. I know I What did you say to him? what are you saying? fell the Beat. fell the Beat. Meaning Who am I talking to right now? you are mine He cannot be a student. Because I have never told my students I was never taught how to lose. from whom did you learn Do you want to lose? From whom did you learn how to lose? That means you are not meant to lose, friend. You are my student. Ok? so such Don't give up on small things. Sometimes Sometimes your numbers will come down. Will work. I have to chill. Have to work hard. Don't lose. give up Don’t want to do. Come on. Sodium hydroxide. What is the household name of sodium hydroxide? Is? Like its nick name is caustic Soda. What happens? Caustic Soda. Correct Is? NaOH sodium hydroxide caustic How is soda made? very important now The process is chlor alkaline process. What is the name of the process? Process name This is the chlor alkaline process. Variant. Today I am telling you inside the paper that you like Be it half year, board exam, pre There should be a board, inside everything, out of the paper The question is whether to come or not. Chlor On alkaline process. You also asked for this diagram I have gone there many times. Understand this. Now what am I do I? In chlor alkali process, the most First, I take salt water. Added salt Gave. Put two rods. one took the cathode, one Took the anode. The cathode is the anode, right? Ok? Now See, I passed the electricity. Now, for salt The water will start breaking. He will start running away. will break salt water. Ok? So what will happen? this which The salt water was NaCl NaCl + water. This we Do you say it son? Brine Solution. What Do you say anything? Brine Solution. Brine. Wine No brine. ok sir. now these break It will take place. What else will happen? here here this one whichever side that is, that is, the side of the anode What will happen from there? Chlorine Gas Escape She will start doing it. chlorine gas and that which reacts at the cathode Hydrogen gas escapes from the side She will start doing it. and that is on the underside of the cathode what is near cathode? what is near cathode? near Cathode NaOH solid substance you will get Will go. Whose will it be? Sodium of hydroxide. So, what happened here? What would this NaCl+ water do to each other? Seems like? It starts breaking. breaks down into Na+ goes. breaks down into Cl-. and this What even is H2O? It breaks. Whose breaks inside? This H2O breaks down. OH inside the negative, OH inside the negative and H Inside the positive. Ok? so this also breaks goes. Now what happens is that this OH It is negative and this one which is Na positive Let's create a bond. And what is this relationship? What is called? This relation is sodium hydroxide It is called. and this is sodium hydroxide It comes from the cathode. Now remember, at the cathode Which gas is it? say speak H2O and here What is? How will you remember Cl2? if you If you remember, we read in the first chapter that hut OA chal hut OA what was it? Let's go OA means hydrogen gas and oxygen gas at the cathode On the anode. Now it is same here also. Cathode on hydrogen gas. but because here There is no oxygen gas. So who is at the anode? C gas is formed? chlorine gas is formed Is. Now how does the question come here? These The diagram is important. this electricity is nearby Curry. One anode, one cathode near cathode NaOH It came readymade. Now this is the diagram It is important. This process is important. After that their uses are important. Three The products are being made son. One is the most The important product is sodium Hydroxide. Then there are two by-products. One is hydrogen gas, one is chlorine gas. So look, first of all, if I talk about of chlorine gas. Where does chlorine gas work? Will she come? Used in making bleaching powder. We will talk further but you should know this much It is necessary that the chlorine gas Used to clean swimming pools etc. if you have noted it, then there is something in it There is no need to remember to clean the water etc. What are the uses of water treatment plants? Which chlorine is used inside gas is ok ji and manufacture of it also works in plastic now if I Brother, should I talk about this sodium hydroxide? Sodium hydroxide is very important. Sodium hydroxide paper is also made From sodium hydroxide. Textile Industry means clothes. for clothes It is also very important. This soap is also from this It is made. So this is very important. Isn't it? Now one is left. which by product is left Went? Hydrogen. What is hydrogen? What will you do this brother? Hydrogen as a fuel. Hydrogen is as a fuel. Hydro One It works as fuel. other than that Ammonia which is added to fertilizers. Fertilizer is put inside the fields, right? It is useful there too. and hydrogenation Hydrogenation of off oil oil is also useful Is. So remember these uses. this is useful son I am saying it again. too much It is important. Don't forget this. all of these You should remember the usage. what's the matter Did you understand this far? Do you understand all these uses? did you come? What was this? This was the whole color Alkaline process. what is the reaction to this Is it happening? The reaction taking place is NaCl + H2O Is the brine solution capable of passing electricity What is made of NaOHCl2H2O This reaction is on your screen now Look, a lot of questions are coming out of this it's like I can show you something I will give you like 2017 2018 21 23 24 26 27 29 I will write it down right now I have written it down right now let's go Electrolysis of brine which gas is Collected at cathode and anode. remember the same Is. Like it used to happen in the first chapter when We used to do electrolysis of water. Hydrogen is always present at the cathode and hydrogen at the anode Which one does it happen? chlorine is present at the anode She goes. So this is option. Very good sir. next The industrial process used for Manufacturing of Caustic Soda involves the electrolysis of an aqueous Solution of a compound X. Who is X? Any He will not say that he is unfaithful. I know that too. But What is? NaCl because we use NaCl only They do electrolysis basically. Correct Is? So what? of an aqueous solution X in A process to generate gases Y and Z There are two gases. One would be hydrogen one There must be chlorine. Ok? Y is Liberated at Cathode. So it is obvious that it will be Y hydrogen gas and Z will be chlorine gas. Correct Is? Which is liberated at anode. On Treatment with Dry Slag Lime Forms A compound B. What is he saying now? Now what He is saying that there is this gas which is Z It is a gas, that is, this chlorine gas Chlorine Gas when Dry Slagged Lime Slate What is lime, son? What is Slate Lime? tell me does it happen? This is called slate lime. When this gas reacted with it, then What did it create? This created the compound that The name of the compound is B. So you have to tell me this Look, I know x, y, z, but what is this B? Bhaiya why didn't you call him, this is the next one This is the topic which we have to study whenever we If we pass cl2 through the snout line then A compound is formed from bleaching powder We will also talk about this question This is a mixed question, right? We will move ahead with it. we will talk about it here it is brother The bleaching powder with which we remember us we were appearing, look brother What is bleaching powder and calcium Oxy Chloride Ok. COCl2 COC2 CACl2 means CaOCl2 Cow Cow Cl2 Cow Sealed. Ok? Isn't it? Cow Seal Come on what is this? Bleaching The powder which we call calcium oxy Chloride. Now how can this be made? When we dry Let's take slate lime. Slate Lime Co. and If we pass Cl2 gas through it then This is formed and simultaneously water is formed. Very Important Reaction asked repeatedly Is. Ok? So remember this is the one The compound about which the previous question was I was being asked. Now this bleaching It is a powder, son, what are its uses Are? Its uses are very simple. Bleaching agar You must have guessed from the name itself that clothes Bleaching of occurs. of hair too Bleaching occurs. Nowadays those girls are red She is coming after getting her hair colored. Isn't it? I request you to stop dyeing your hair red Do it brother please. Please friend. what is it friend? Who dyes his hair red? So that means That means whatever it is. So bleaching work What is? First of all, the color Is it the textile industry changing? It will be useful in textile industry non washed cloth in old wood pulp in It is also being used in paper factories Also used as an oxidizing agent because it has oxygen so it can give oxygen to the person so Also acts as an oxidizing agent Used to make drinking water free form Also works to clean germs from drinking water Bleaching powder is coming to mind, remember this use keep the question will come directly right Reaction of formation of bleaching powder And three uses. So at least remember these three uses Should be. Next Sodium Hydrogen Carbonate. Look at baking soda. Baking Soda What happens? We call it sodium Hydrogen carbonate. How will you remember it now? If mom is making something in baking If it is there then water will be needed. Mom, if something If you are applying it then water will be needed. to bake Water is very essential for this. And what is water? H Hydrogen. Isn't it? So remember NaHCO3. Don't get confused because there will be another one next Washing soda. There is no H in it. remember like this keep that if cooking is happening then there is water If it takes NaHCO3 then it means this is your What? Baking soda. Its common name is Baking soda. How is it made? not now It is made from different things. First of all we Let's take the brine solution. Brine The solution is called salt water. of salt I took water. Then I thought today something stormy We do. So what did I do? No. I I released carbon dioxide gas from it. Got it passed. Then I said I didn’t enjoy it. I do this so that I can also pass ammonia NH3 I will give it. So what did I do about it? I Brine solution taken first. First a gas branch. I didn't enjoy it. So I used NH3 That means ammonia was added. What will come next? My This sodium hydrogen will come near you Carbonate i.e. baking soda. and its Ammonia chloride is also formed. Correct Is? ammonium chloride. Ok? So these two Things get made. this reaction is also Variant. Now another reaction is important. Now suppose I heat it up. Now when I What will happen if I heat this, son? Tell. Now if I heat it up then what? Will it happen tell me? If heat is provided then it will turn into Na2CO3 It will be converted. The hydrogen will be gone. He will go away brother. He will go away. Ok? So The water came separately. The CO2 gas came out separately. and this CO2 is very important. I will tell you further. and this what happened? sodium carbonate. Ok? Will we remember these two reactions? What Why am I doing these two dances, friend? Come on come on, come on. Now comes its uses Which is very important. and its uses Say Indirectly to Three Marker Questions Coming is certain. I am telling you today, I have to come Must come. ok sir? so the first question See. How is baking powder made? This is baking soda. Baking in your homes There is powder. Both are different. 2120 There is no difference. 21 crore and 20 crore There is a difference between the two. So your home baking Powder is used. Now, baking powder It is made from baking soda only. How is it made? The method of making it is also very important. How is baking powder made? Baking Soda In that we add an acid. the acid which what is your name? Tartric acid. What? Tartric acid. where is tartric acid Did you get it? Initially I read about natural acid. Tamarind is found inside tamarind. Yes. So we can find tartric acid in it Let's put it. along with that a compound and It happens. That will be a little out of syllabus. Cornstarch. We also call corn starch Let's add to it. So remember that you Tartric acid is added to it. from that Baking powder can be made. Ok? Second What is its other use? Obviously a thing If you have baking soda then use it in baking will be. Now why is it used in baking? It happens? Due to its reaction. If you have If you noticed then when I am heating it hmm if I'm heating it then Do you know what is being made? A gas is being formed. A gas is being formed. Which gas is being formed? CO2. because of the carbon dioxide that you When you make a cake, that cake puffs up inside the cake. This is why baking soda or We are adding baking powder. Correct Is? because it releases carbon dioxide Due to which your cake becomes fluffy. Fluffy. Correct Is? Next ant acid. Now look at what this is Its nature is basic. This is a little basic salt. What is this? This is a type of basic salt. so not this If you have acidity, you can take this Even if you take it, it will be alright Acidity. Ok? Next comes cleaning Agent. It is often used as a cleaning agent It is also used in different places. And The most important thing is fire extinguisher. Wherever a fire breaks out, some fire Extinguishers have a solution for this Is. Why? If you spray its solution then Tell me what will happen? It is summer, it is hot. from the heat This will release carbon dioxide. And You know what's needed to put out a fire Contains carbon dioxide. Ok? in In certain fire situations it can release carbon dioxide and be used as a fire Exting. Logical questions arise here. explain why sodium hydrogen Carbonate Can Be Used in a Fire Extinguisher. you should know Carbon dioxide is released when heat is applied She goes. Let's look at the question. Right the chemical name and formula of baking Soda. hey bhaiya chemical name formula Baking soda NaHCO3 that's it dude. Ok? Meaning sodium hydrogen carbonate. Bleaching Write the powder brother. Calcium Oxyride CaOCl2 next. why is baking powder used in Baking? Why is it being used in baking? Is? You are asking us why we are here? Raised question on existence. because when Let's heat it up and get carbon dioxide Releases so that your cake is fluffy It is made. Ok? So there are two reasons anyway One is baking powder contains weak acid There is a stronger base inside it Because of which it releases CO2. One reason is that baking soda which It is that alone which gives a bitter taste. Correct Is? It alone gives a bitter taste. That means in this Look, what have you asked? why is baking soda Alone not used? Baking in our homes Why don’t you use soda? baking powder Why do you do it? because if I'm baking If I do baking with soda then it will be very It is bitter. It is bitter. Because of this This will make your cake bitter. Therefore we tell me what do you use? Yes, baking I use powder. Remember this. Let go. A Compound X. X's are everywhere what's the matter Buddy? Why not leave your ex behind? X is added to cakes to make them soft and Spongy. On heating it release Y. Very Excellent. then release residue Z is basic in Nature. Identify X and Z is obvious thing Is. It is obvious. This is it. This Get it heated. The gas that is being released is CO2 Due to which the cake is becoming fluffy. and the material that The son is being saved, this is him. the material which It is this one who is being saved. So, such X and Z also ask questions of Let's go. Let's move on. Moving Forward Are. I will give you some questions for homework. I am giving it to you as well. So the first The question you need to ask yourself is this Is. This is a good question. You get this from yourself Have to do it. Ok? This is your homework. These You will do it yourself. Like questions about x and z Get this same type of question done You are getting to see it. Let's move forward now Let's increase. Whose side do we come next? Now We come to washing soda. Washing Nirma powder is as white as milk, look at that Nirma Have you seen the ad from childhood? You are nasty Earlier there used to be a big Nirma ad What is washing powder and washing soda What happens to washing soda when it reacts with Na2CO3 it was there when water was added to it then its formula becomes Na2CO3.10H2O And this is called washing soda. then remember What is washing soda? when the water we If you give it to this then the water gets added. joins the dot. what does this dot mean Is? I will tell you further. I will tell you further. Ok? So Washing soda can be prepared by heating Sodium Bicarbonate & Recrystallization. what is this brother? I did not understand this Tell. look, whenever a molecule is Water is connected separately, we call it are crystallizations. or water of Crystallization. for example for Example I will give you some examples also Am. Look at the definition first. Some Salt contain water of crystallization which is fixed number of water molecules in there Structure. What is an example? Copper Sulphate. Copper sulphate is mixed with five water remains attached to the molecule. then its colour Do you know what happens? Its colour is Blue. But when I heat it up, son The whole thing disappears. So now its Do you know what happens to the colour? White. As such We read it in the first chapter itself. FeSO4.7H2O with if you remember. Ok? There are more examples of this, read more about them later will read. So what is this? water of Crystallization means water is added. Ok? Will come back. of washing soda Let's see the usage. hey if it's washing then it's washing It will be useful only in this. Then it will be useful for washing. Clean stains and grease. very nice. These It is most important. A hard water is which you will read in the fourth chapter In Carbon and Compounds. to hard water This makes it soft. Remember it now. Fourth You will understand in the chapter. Just memorize it now. Why? Because it is very important. Softening of hard water. What is hard water It happens? What is tough water? Should I do boxing there? No. No. It is a different thing. We will see it later. used in Inside the Glass, Soap and Paper Industries It is also used. Help Manufacturing Of Chemical like borax. Some compounds are It is also used in their manufacturing Is. Enhances detergency. of detergent It is being put inside also. Let's go even If you understood everything then finally Now we are moving on to the last salt which what is POP plaster of paris What happens? look brother plaster of paris It is the formula that is Calcium sulfate hemihydrate. Hemi's It means son, half and half like in that Half your heart. Ok? So calcium Sulfate hemihydrate. We call this Plaster of Paris. Fall in your homes The ceiling work must have been done. The ceiling will be like this In your homes. It is made of POP. Whose is it made? POP. Its chemical The formula is COHSO4. 1/2H2. Now if those ceiling ones of yours If you have a brother then flex him in front of you Give. Bhaiya I know the formula of POP Is. Ok? How is it made? A Compound It is Gipps. what happens son? Gipps. What happens? Gypsum. Remember the name. Gypsum. Isn't it? Gipps. calcium sulfate Dihydrate i.e. CSO4 CSO4.2H2O What do I do with this gypsum, son? Heat I do it. and when I heat it up What does it convert to? these convert It happens inside POP. and with POP The half water molecule gets separated goes. Ok? So, what did I do? Heat the gypsum. and heating the gypsum What happened from this? It became a POP. is this Is everything clear? what would ever happen now Is? It heats at a fixed temperature which has to be done at 100° Celsius. If I heat it beyond 200°C, I will take it. So this half water molecule Isn't it okay, this is also good, I will do it. in prayers Remember this. And what remains is calcium sulphate. And Do you know what its name is? We call this There is dead burnt plaster. what do you say Son? what do you say? We call this It is also written here – Dead Burn Plaster. Formed when POP is heated above 200° Celsius. So what do we call this? Dead Burn plaster. It is of no use. Therefore it is important to heat it at 100°. Come Did you understand? Let's see the usage. Construction and Building Materials. The material is used for building etc. If you have ever had a medical fracture It is also useful for joining bones. It is also useful in medical field. Construction It is also useful in. in art and craft It is also useful. and the teeth that are made these days Dental molds are used to make fake teeth They are made from POP. Ok? so this It has all the functions. Now here is a question that the most important thing is why POP is Not Kept Open? It is not kept open. know why? Because if we consider POP Do you know what will happen if it is kept open? This is CASO4 dot 1/2H2 is there, it will get water Because what is it? There is moisture. So this What will I get? You will get water. and the address what will happen? it will convert back From Inside Gipps. and the gypsum that is No friend, he is very solid. He is very It is solid. then you don't use gypsum can do it. Therefore, keep them in air tight containers. It is kept inside. I also have a question I will show you. I guess one question repeatedly are asked. why plaster of paris Sturdy in an airtight container? plaster of Paris Stuck in an Air Tight Container? because it absorbs moisture from the atmosphere And get converted into gypsum. of gypsum It gets converted inside. what would happen to him Is? which is hard solid and looses it Settings property. it is not set now gets it. Now it cannot be set. Isn't it? Yes. Ok? Like you don't even have that Pie set. Ok. Come on, let's move on. Let's move ahead. Now some Let's see the question. Tell me quickly. Then I will finish the lecture. just question The question is over, it's over. Tata By-Bike The time has come, son. It's time to say tata bye-bye. Come on. Identify the product X in the Following. X tell me brother. CSO4 Dot is here now But what will happen? What will happen if you heat it? Tell me what will happen here? One this is wrong The formula is written down. Cut this. By the way What will be the answer to this? Tell. what is the answer will be? Plaster of Paris. Isn't it? here at Should have been 1/2H2. let's go to the next question What is? what type of salt is used to REMOVE PERMANENT HARDNESS? Permanent Hardness, I just told you what to remove comes in use? who does? Washing Death Nir Hey washing soda. washing soda which is which is Na2CO3.10H2O Remember the entire formula. 10H2O what is that Is? Water of crystallization. Name given compound and explain the chemical The principle behind it. the one behind him What is chemical principal? how is it made Son, that? How is it formed? tell her What is the principal behind? it is formed By water of crystallization. So here you But water of crystallization had to be explained. Write the Chemical Equation to Prepare Washing Soda from Baking Soda. Baking What do you do with soda? Let's heat it. Heat We do. So this is made together. CO2 is produced simultaneously. H2O is formed. Then I water it again. Water I will give it. So what does that make it? come very much Excellent. Next Plaster of Paris Form Gipps. I just told you this. CSO4.2H2O What does it turn into if I heat it? CSO4. Remember the name 1/2H2O. Calcium Sulfate hemihydrate. very nice. next Question. This is a very good question. Attention View from. Identify the compound X on the Basis of the reaction given below. also Write the name and chemical formula. One The compound is X. Ok? If that compound is I am getting it reacted with zinc. So Look, he is giving out hydrogen gas. Ok? If I mix the same compound with an acid I am making him react and he is giving me H2O. Tell me who gives water with acid? i.e This is a base. That means this is one base. Isn't it? Now you understand. You have the reaction of the same base I have read it with zinc. which base react does it with zinc? Tell. Sodium Hydroxide. What else does it make? Natunatoo. Come let me bite you. Natu, then you will also become like me. natu to natu come if your Gantu is okay what happened yes I got it I understood it What is this A? Sodium Zincate? B If I start the reaction of NaOH then it will happen If I do it with HCl then it will form NaCl then B will be NaCl and D what will be D look at this What is acetic acid and acetic acid I have told you what NaOH makes. [ __ ] also told about the reaction I have already told you about this reaction also. Great friend. What is the matter. the brain is There is too much inside you. The last question is your homework There is a question. I want to tell you what happens When gypsum is heated at 100° Celsius? What happens? And you will write this comment. A You will write the option. what happens to gypsum with? what is made? Tell me the name of the compound. And when baking soda is heated. Baking Which gas is released when soda is heated it occurs? You will find this in both comments A and B Have to do it. The one whose answer is correct will get a pin It will be done son. What is the matter with this. Our chapter is finally over, friends. And whenever you feel demotivated Prashant bhai Remember one line of this. Always smile Hide the gum. Always smile, hide your sorrow. Time will tell those people who we are and Our time has come. This is the time to Prove everyone. Get on with it, my lions, fools! Boys and girls, go and create a ruckus. and next Which lecture do you want? Definitely in the comment Narrate. Take care everyone. I am all of you my own Prashant bhaiya and if you liked it You should definitely go to Instagram and watch this lecture. tell me the story by posting the story etc Let me know if you liked Instagram go to id description bye take care Is.