Question

in experiment-to show that carbondioxide is necessary for photosynthesis-- for what lurpose did pottasium hydroixide is used​

Answer 1

Answer:

Potassium hydroxide is used in this experiment played the role of absorbtion of carbon-dioxide from the plant surrounding. This is done so as to remove all carbon-dioxide from the jar or from the surrounding where pmnat is placed.

Answer 2

Answer:

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.

Explanation:

Potassium hydroxide in the flask absorbs carbon dioxide; thus, due to the absence of CO2, the leaf fails to produce starch which proves that carbon dioxide is necessary for photosynthesis