WAEC - Chemistry (2014 - No. 29)

Consider the reaction represented by the following equation: N2(g) + 3H2(g) ⇌ 2NH3(g); ∆Hϴ = -xkJ mol-1. Which of the following conditions would increase the yield of NH3?
Addition of iron catalyst
Increase in the temperature of the system
Increase in the volume occupied by reactants
Increase in the total pressure of the system

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