Mention the conditions required to maximise the yield of ammonia.

Mention the conditions required to maximise the yield of ammonia. 

Answer

Ammonia is prepared using the Haber’s process. The yield of ammonia can be maximized under the following conditions:
(i) High pressure (∼ 200 atm)
(ii) A temperature of ∼700 K
(iii) Use of a catalyst such as iron oxide mixed with small amounts of K₂O and Al₂O₃