Question

Write the equation for the action of heat on:
(i) Ammonium chloride
(ii) Ammonium nitrate
State whether each reaction is an example of thermal dissociation or thermal decomposition.

Answer 1

(i) Action of heat on ammonium chloride is reversible. When heated, it decomposes to form ammonia and hydrogen chloride. When the products are cooled, they recombine to form ammonium chloride .

NH4CI

This is therm a I di ssoci a ti on reaction .

(ii ) Ammonium ni trate on heating completely disappears, escaping in the form of water vapour and ni trous oxide.

Nh4
This is therm a I di ssoci a ti on reaction .