What is observed when carbon dioxide gas is passed through lime water. (i) For a short duration (ii) For long durration ? Also write the chemicalequations forthe reaction involved.

What is observed when carbon dioxide gas is passed through lime water.

1.	What is observed when carbon dioxide gas is passed through lime water. (i) For a short duration (ii) For long durration ? Also write the chemicalequations forthe reaction involved.
Answer» Solution :(i) For short duration : Limewater turns MILKY due of FORMATION of `CaCO_(3)`, which iws INSOLUBLE in water . `underset (("Lime water"))(Ca(OH)_(2)(aq))+CO_(2)(g)rarr underset(("White ppt"))(CaCO_(3)(S)+)H_(2)O(l)` (ii) For Long duration : A clear solution is obtained due to formation of calcium bicarbonate, `Ca(HCO_(3))_(2)` which is soluble in water `CaCO_(3)(S)+H_(2)O(l)+CO_(2)(g)rarrCa(HCO_(3))_(2)(aq)`