Question

Name the gas evolved when the following mixtures are heated :
(i) Calcium hydroxide and Ammonium Chloride.
(ii) Sodium Nitrite and Ammonium Chloride.

Answer 1

(i) Alkalis reacts with ammonium salts on heating to liberate ammonia gas.

$Ca(OH{)}_2+2N{H}_{4}Cl\to CaC{l}_2+2N{H}_3+H_{2}O$

(ii) When sodium nitrite reats with ammonium chloride nitrogen gas is liberated.

$NaN{O}_2+N{H}_{4}Cl\to NaCl+N_2+2H_{2}O$