A student infers that carbon dioxide is exhaled by human being justify this statement with the help of simple experiments
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yes its true statement
we take in oxygen and this oxygen gets oxidised with glucose to give carbon dioxide water and energy
this exchange of gases takes place in alvioli (lings)
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To show the presence of CO2 you have to do simple experiment
1) Take freshly prepared limewater
2) Blow air in it with the help of straw
The limewater will turn milky
The Limewater which is CaOH is transparent but when it reacts with CO2 it turns into CaCO3 which is opaque.
The equation is as follows
Ca(OH)+CO2= CaCO3
Hope will help.
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