Answer 1

Ammonia is prepared on a large-scale by the Haber’s process.

`N_2(g) + 3H_2(g) ⇌ 2NH_3(g)                           triangle_fH^@ = -46.1 kJmol`

The optimum conditions for manufacturing ammonia are:

(i) Pressure (around 200 × 10⁵ Pa)

(ii) Temperature (700 K)

(iii) Catalyst such as iron oxide with small amounts of Al₂O₃ and K₂O

Answer 2

Commercially, by Haber’s process.

`N_2(g) + 3H_2(g) ⇌ 2NH_3(g)                           triangle_fH^@ = -46.1 kJ mol^(-1)`

iron oxide, K₂O, Al₂0₃ The optimum conditions for the production of NH₃ are pressure of 200 atm and temperature of 100K