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 the 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

Answer:

CaCO₃ (X) + HCl ⇒ CaO + CO₂ + H₂O

CO₂ + Ca(OH)₂ (Y) ⇒ CaCO₃ + H₂O

G ⇒ Chlorine

Ca(OH)₂ (Y) + Cl₂ ⇒ CaOCl₂ (Z) + H₂O

X ⇒ CaCO₃ ⇒ Calcium Carbonate

Y ⇒ Ca(OH)₂ ⇒ Calcium Hydroxide

G ⇒ Cl₂ ⇒ Chlorine

Z ⇒ CaOCl₂ ⇒ Bleaching Powder

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