Question

What should be the procedure to CO2 to turn lime water milky

Answer 1

Carbon dioxide turns lime water milky due to the formation of insoluble calcium carbonate, CaCO3. Lime water turns milky when you go carbon dioxide through it on the reaction that a response that delivers a white precipitate happens.

Answer 2

CO2 + Ca(oH)2(limwater) = caco3 (milky)