Question

Favourable conditions for manufacture of ammonia by the reaction,
$N_2 +3H_2 \rightleftharpoons 2NH_3$; $\Delta H=-21.9\,kcal$ are

• A. low temperature, low pressure and catalyst
• B. low temperature, high pressure and catalyst
• C. high temperature, low pressure and catalyst
• D. high temperature, high pressure and catalyst

Answer 1

Answer: (B)

The formation of ammonia is favoured by high pressure which would shift the reaction in the forward direction. The reaction shifts in forward direction at low temperature and more product formation occurs Fe acts as a positive catalyst and also shifts the reaction in forward reaction