O-LevelChemistryRates of Reaction5070/12 · May/June 2019 · Q241 Mark

Ammonia is manufactured by the Haber process. N2(g) + 3H2(g) ⇌ 2NH3(g) ΔH = −92 kJ/mol For this reaction, which rows give a true statement together with a correct reason?

A1 and 2 only

B2 and 3 only

C3 and 4 only

D1, 2 and 3 only

✓ Correct answer

A: 1 and 2 only

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2019 Paper 1 Variant 2, question 24.

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