To show that CO2 gas is released during respiration.why KOH solution is used
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Respiration in plants can be studied in moist germinating seeds that release carbon dioxide (CO2) during respiration. The seeds are kept in an air tight conical flask. A small test tube containing potassium hydroxide (KOH) solution is placed in the flask. Potassium hydroxide absorbs carbon dioxide released by the seeds and a partial vacuum is created in the flask as a result. This causes the water level in the delivery tube to rise.
To study respiration in humans Calcium hydroxide is used.
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We add KOH in the tube which leaf is kept so KOH reduces the CO2 inside the bottle which supports our experiment
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