A-LevelChemistryReaction kineticsMay/June 2017Paper 1 Q341 Mark
The rate of chemical reactions can be increased by the addition of a suitable catalyst. For which reactions can a heterogeneous catalyst be used? 1 N₂(g) + 3H₂(g) ⇌ 2NH₃(g) 2 2SO₂(g) + O₂(g) ⇌ 2SO₃(g) 3 2NO(g) + 2CO(g) ⇌ N₂(g) + 2CO₂(g)
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
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The correct answer is A. This question tests the candidate's understanding of reaction kinetics within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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