Answer :

Ammonia (NH3) is generally prepared through a many numbers of processes out of which Haber’s process is the most important one. Following the Le Chatlier’s principle and taking into considerations the reaction conditions of the Haber’s process, the yield of ammonia can be maximized by

(i) High pressure (~ 200 atm)

(ii) High temperature (~ 700K)

(iii) A mixture of Iron oxide with small amounts of K2O and Al2O3 used as a catalyst. (This mixture acts as a positive catalyst in the Haber’s process)

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