Experiment Setup for Gas Collection from Hydrilla

Objective

To observe the gas produced by Hydrilla when exposed to bright light and to test its properties.

Materials Needed

• Hydrilla (aquatic plant)
• Test tube
• Bright light source
• Stopper for test tube
• Glowing splint

Procedure

1. Setup Preparation

   • Place the Hydrilla in a test tube.
   • Position the test tube in a location where it is exposed to bright light.

2. Observation Period

   • Observe for any gas bubbles released from the Hydrilla.
   • Note any gas bubbles released over the course of the experiment.
   • Allow the setup to remain undisturbed for 24 hours.

3. Gas Collection

   • After 24 hours, carefully move the test tube without disturbing the contents.
   • Stopper the mouth of the test tube to contain the gas.

4. Gas Testing

   • Take a glowing splint and introduce it into the test tube.
   • Observe whether the splint relights or not.

Notes

• Expected Results:
  • If the gas is oxygen, the glowing splint should relight, indicating the presence of oxygen produced by photosynthesis in Hydrilla.
  • If there is no reaction, the gas may not be oxygen, requiring further investigation.