The figure below represents an experimental set-up for demonstrating certain aspects of air breathed in and breathed out.

What is the aim of the experiment?

Name the liquid contained in flask A and B.

What would be the observation after the experiment?

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Solution

The aim of this experiment is to prove that carbon dioxide is given out during respiraion.

Liquid in flask A is lime water or Calcium Hydroxide {Ca(OH)₂ }. Liquid in flask B is Calcium Carbonate {CaCO₃} and water {H₂O}.

Calcium carbonate precipitates as a milky white precipitate turning the lime water milky.

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The figure below represents an experimental set-up for demonstrating certain aspects of air breathed in and breathed out. What is the aim of the experiment? Name the liquid contained in flask A and B. What would be the observation after the experiment?

The figure below represents an experimental set-up for demonstrating certain aspects of air breathed in and breathed out.

What is the aim of the experiment?

Name the liquid contained in flask A and B.

What would be the observation after the experiment?