Question

Explain the following:(a) Lime water turns milky on passing carbon dioxide gas into it. Why

Answer 1

due to formation of calcium carbonate which imparts milky colour

Answer 2

When we pass excess Co2 ,calcium bicarbonate Ca(HCO)3 is formed which is soluble in water, So the solution turns transparent. When carbon dioxide is passed through lime water it turns milky due to the formation of water insoluble precipitate CaCO3.

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