Consider N₂(g) + 3H₂(g) ⇌ 2NH₃(g) ΔH = −92.46 kJ/mol. The optimum temperature (°C), to produce ammonia is (KMU MDCAT 2024)

Verified Answer & Explanation⌄

Correct Answer: B) 450

Concept Explanation

The Haber reaction is exothermic, so lower temperature favors ammonia, but a very low temperature makes the reaction too slow. About 450°C is used as a practical compromise between yield and rate.

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