O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2018 · Q161 Mark

The equation shows the reaction for the manufacture of ammonia. N₂(g) + 3H₂(g) ⇌ 2NH₃(g) Which change will decrease the activation energy of the reaction?

Aaddition of a catalyst

Bdecrease in temperature

Cincrease in concentration

Dincrease in pressure

✓ Correct answer

A: addition of a catalyst

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2018 Paper 1 Variant 1, question 16.

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