Question

How you will prove that carbon dioxide bis present in air

Answer 1

Answer:

Limewater can be used to detect carbon dioxide. If carbon dioxide is bubbled through limewater then it turns from clear to cloudy/milky in colour. This is why limewater used in a simple respirometer can show that more carbon dioxide is present in exhaled air compared to inhaled air.

Answer 2

Explanation:

1. Aim: To show the presence of Carbon dioxide in air.
2. Apparatus: Lime water is placed in a test tube which is provided by two outlets A and B.
3. Procedure: Air is sucked slowly from the outlet B.
4. Observation: The lime water in the test tube turns milky.