Question

Inthe experiment 'co2 is released during respiration ' the student used Cotton to plug in the conical flask instead of cork? Will his observation be correct? Why

Answer 1

no,because air would enter through the gaps in cotton plugs and a vacuum does not form their.
hope it helps ;)

Answer 2

If we use cotton plug instead of rubber cork , then the CO2 will not be observed properly because air would enter through the gaps in cotton plugs and air is a mixture of a number of gases . so a vacuum does not form and observations would be wrong.