Question

When carbon dioxide is passed through lime water ,it turn milky ,why

Answer 1

it is due to the insolube suspension calcium carbonate.
ca (oh2)(aq)+co2(g)=caco3(s)+h2o(l).

Answer 2

Answer:

When carbon dioxide is passed through lime water for a short time,it turns lime water milky due to formation of a white precipitate of calcium carbonate.