Question

when excess of carbon dioxide gas is passed through lime water first it turns milky & then becomes colourless give reason for the change write the balance chemical equation for the reaction​

Answer 1

Answer:

When the excess carbon dioxide gas is passed through the lime water, it turns milky first due to the formation of the calcium carbonate as a precipitate which is insoluble in water and then become colorless due to the formation of calcium bicarbonate.

Answer 2

Answer:

I also gave the same doubt.