Question

Write scientific reasons.

Limewater turns milky when CO₂ is passed through it. 

Answer 1

When carbon dioxide and CO₂ gas are passed through lime water, it turns milky due to the formation of calcium carbonate.

\[\ce{Ca(OH)2_{(aq)} + CO2_{(g)} -> CaCO3_{(s)} + H2O_{(l)}}\]