we know that the neutralization reaction between an acid and a base will always form salt and water as the products and we are going to look at those salts through a process called hydrolysis which is essentially how those salts react with the water that is formed there are three scenarios that we are going to look at the first one is the reaction of a strong acid hydrochloric acid with a strong base sodium hydroxide to form salt and a sodium ion that comes from our strong base in a quarry and that comes from the strong acid we can therefore say that the sodium ion must be the conjugate acid for this base and because sodium hydroxide is a strong base we know that the conjugate acid would be weak in the same way we know that the chlorine iron comes from the hydrogen chloride acid which makes them the conjugate acid-base pair which means that this is the conjugate base for the hydrochloric acid and once again it was a strong acid and therefore this is a weak conjugate base for the hydrolysis reaction we would look at these and we would say how does a chlorine ion react with a water molecule and what we can see here is that because it is a weak base we know that it is very unlikely to be able to take a hydrogen I am away from a water molecule so we can therefore say that there is no hydrolysis between chlorine and water will no hydrolysis reaction in the same way for sodium we can see that sodium being a weak acid does not have a proton to donate to the water and therefore cannot donate or hydrolyze with the water so since there is no hydrolysis reaction with the water there is no further product formed we'll see what exactly we would expect to form in the next two examples but that is why we can safely say that this is a neutral salt if we can see that a strong acid would completely neutralize a strong base and assault with envy a neutral salt this is in contrast to a reaction where we have hydrochloric acid again which is our strong acid and ammonium hydroxide which we know is a weak base once again it forms water and then the two salts that are formed the ammonium we can see very clearly is the conjugate acid for this ammonium hydroxide base and since it is a weak base that must mean that it is a strong conjugate acid and once again the chlorine is our weak conjugate base for the hydrochloric acid so that any new substance here is the ammonium I am and we are going to see that that ammonium ion undergoes hydrolysis with water because it is a strong conjugate acid meaning it is capable of donating a proton and since it can donate a proton to water will form more hydronium ions and obviously some ammonia but this hydrolysis the hydrolysis of ammonium with water clearly shows that our products actually form some ammonium and what that implies is that even though we have a neutralization reaction between an acid and a base salt the ammonium chloride molecule is still acidic because we had a strong acid and a weak base so the implication here is fairly standard in that we would expect that a strong acid plus a weak base will form a acidic solution but now we can see that that solution is acidic because the salt that is formed is able to hydrolyze with water to form more ammonium ions and then finally if we have a weak acid this is a phonetic acid and react that with a strong base sodium hydroxide once again we form water the conjugate base for this weak acid would obviously be a wrong conjugate base and the conjugate acid for sodium hydroxide would obviously then once again be a weak conjugate acid so the only new substance here is this substance over here and we are going to see that that is able to hydrolyze or undergo hydrolysis with water once again because it is a strong conjugate base we know that it is a base meaning it will accept a proton the fact that it can accept the proton means that the water molecule loses a proton and we form that saying if an acid once again but more importantly we form hydroxide ions those hydroxide ions we know affect the pH of the solution and make the solution more basic so once again the implication make sense in that a weak acid plus a strong base is going to form a basic solution because the salt that is formed is basic