Question

mates acche se aur clear answer dena aur chemical reactions jarur betana

Answer 1

Heya !!!

When CO2 gas is passed through lime water, it turns milky due to the formation of white precipitate of CaCO3 .

But if CO2 is passed in excess , milkiness disappears due to the formation of Ca(HCO3)2
which is soluble in water.

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



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

First one is a type of displacement reaction , and second one is a type of combination reaction.




I hope this helps u dear friend.