Question

A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives the carbonate back. On the other hand, a gas G that is obtained at anode during electrolysis of brine is passed on dry Y, it gives a compound Z, used for disinfecting drinking water. Identity X, Y, G and Z.

Answer 1

Explanation:

According to the problem:

Here,

X is calcium carbonate (CaCO

3

).

Y is slaked lime.

Z is bleaching powder (CaOCl

2

)

G is chlorine gas.

Answer 2

Answer:

Metal carbonates on reaction with a strong acid, produces metal chloride and releases carbon dioxide along with water. Thus, the metal carbonate is calcium carbonate in the reaction. Calcium carbonate gives carbon dioxide gas when it reacts with hydrochloric acid.