Why does lime water gets milky when Co2 is passed through it ?

1.	Why does lime water gets milky when Co2 is passed through it ?
Answer» Limewater reacts with Co2 and form calcium carbonate which is insoluble and white crystalline in nature. ... When carbon dioxide is passed through lime water it turns milky due to the formation of water insoluble precipitate CaCO3. Still if excess of CO2 is passed it forms water soluble Calcium bicarbonate .

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