Question

please answer me .......
metal carbonate x on reacting with acids gives a gas which when passed through a solution y gives the carbonate back as the other hand a gas g that is obtained at anode during electrolysis of brine is passed on dry y .it gives a compond z used for disinfecting water . identify x.y.z.g​

Answer 1

X is CaCO3 (Calcium Carbonate)

Now, we know that metal carbonate reacts with acid to give metal salt, Carbon-dioxide and water.

Y is Ca(OH)2 (Calcium hydroxide)

Ca(OH)2 + CO2 -----> CaCO3 + H2O

G is Cl2 (Chlorine gas)

Cl2+ Ca(OH)2 -----> CaOCl2 +H2O

So, Z is CaOCl2 (Bleaching powder)