Question

explain why the colour of lime water become Milky on passing co2​

Answer 1

Answer:

Calcium hydroxide is sparingly soluble in water producing an alkaline solution known as limewater. When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate.

Answer 2

Lime water turns milky with Carbon dioxide when passed over it due to the formation of insoluble CaCO3 (Calium Carbonate). But becomes clear due to the formation of soluable Calcium bicarbonate(Calcium Hydrogen Carbonate)