what happens when excess of CO2 is passed through lime water
Hi,
when carbon dioxide is passed through lime water, a white precipitate of calcium carbonate is formed.
If excess CO2 is added, the following reaction takes place:
CaCO3 + H2O + CO2 → Ca (HCO3)2
The product formed Ca (HCO3)2 is colorless and is soluble in the solution.
Hope it helps.
Cheers!