Consider the reaction represented by the following equation: N2(g) + 3H2(g) ⇌ 2NH3(g); ∆H = – 92kJmol1. Finely divided iron is used as a catalyst in the reaction in order to?

A. lower the value of ∆H
B. increase the time for attainment of equilibrium
C. shorten the time for attainment of equilibrium
D. decrease the yield of ammonia

Correct Answer: Option C

C. shorten the time for attainment of equilibrium