Question

What is the chemical used in the bottle?Why is it use so?​

Answer 1

Answer:

potassium hydroxide

Explanation:

Potassium hydroxide is used in the experiment for the absorption of CO2 from the plant released during respiration . When KOH absorbs CO2 , it creates a "vacuum in the flask " . The air present in the bent glass tube moves into the conical flask . This pulls the water in the bent tube further up .

so photosynthesis will not takes place and in the starch test Leaf will not changes to blue-black. Potassium hydroxide is used in this experiment played the role of absorption of carbon-dioxide from the plant surrounding