Question

To show that exhaled air contains co2

Answer 1

you just have to take lime water in transparent container & then exhale air outward through straw into that solution. Now you will observe that it turns milky in appearance. This shows that the exhaled gas was CO2 (carbon dioxide )

Answer 2

To show that exhaled air contains co2

• Take a test tube fill it with freshly prepared lime water
• take a straw dip it inside lime water and then exhale you will find that the lime water turns its colour to white like milky colour.
• This shows that the air which we exhale is carbon dioxide .
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