1.

what happens when Excess of carbon dioxide gas is passed through lime water

Answer»

On passing CO2 gas through lime water, insoluble calcium carbonate is formed. On passing excess of CO2, soluble calcium bicarbonate is formed.

Ca(OH)2(aq)+CO2(g)  CaCO3(s) +H2O(l)

CaCO3(s)+CO2(g) +H2O(l)   Ca(HCO3)2(aq)

Ca(HCO3)2(aq)- soluble

 CaCO3 -  Insoluble



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