In the Haber process for the industrial manufacturing of am…

Chemistry Chemical Equilibrium Activation Energy, Standard Free Energy and Degree of Dissociation and Vapour Density Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

In the Haber process for the industrial manufacturing of ammonia involving the reaction, N 2 (g) + 3H 2 (g) 2NH 3 (g) at 200 atm pressure in the presence of a catalyst, a temperature of about 500 0 C is used. This is considered as optimum temperature for the process because

Yield is maximum at this temperature

Catalyst is active only at this temperature

Energy needed for the reaction is easily obtained at this temperature

Rate of the catalytic reaction is fast enough while the yield is also appreciable for this exothermic reaction at this temperature.

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The correct answer is:

On increasing temperature though reaction equilibrium shifts in the backward direction but for rate of reaction to be higher, higher temperature is required and particle 500 0 C is found to be optimum temperautre.

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