Question

how do you confirm the gas released during hydrilla experiment is oxygen​

Answer 1

Answer:

Answer Expert Verified

PROCEDURE:1)Place hydrilla plant twigs in a short stemmed funnel and keep it in a beaker containing water. 3)Place the apparatus in the sun for at least 2-3 hours. OBSERVATION:1)Gas bubbles i,e.,oxygen is produced at the end of test tube and remove the test tube gently.

Answer 2

Method of confirmation of presence of oxygen is given below -

1. Hydrilla experiment to check the presence of photosynthesis and oxygen gas is down by the help of inverted funnel, test tube and beaker containing water and Hydrilla plant.
2. Water in test tube is pushed into the beakee by the release of gas which is oxygen.
3. To check its presence, test tube with accumulated gas is removed by closing its mouth with finger or thumb.
4. Further, glowing stick is inserted into the test tube filled with gas. tehe stick will burst into flames in presence of oxygen, thus confirming its presence.