Essential Chemistry for IGCSE - Chemical Reactions (Section 3 - No. 1)

Consider the following reversible reaction: N2(g) + 3H2(g) ⇌ 2NH3(g) ΔH < 0. Which of the following will increase the yield of ammonia?
Increasing the temperature.
Decreasing the pressure.
Adding a catalyst.
Increasing the concentration of nitrogen.

Explanation

Increasing the concentration of a reactant (N2) shifts the equilibrium towards the product (NH3), increasing the yield of ammonia.

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