A-LevelChemistryReaction kinetics9701/12 · Oct/Nov 2010 · Q61 Mark

The reaction pathway diagram below illustrates the energies of reactants, products and the transition state of a reaction. [Figure showing reaction pathway diagram with E1, E2, E3 and transition state labelled] Which expression represents the activation energy of the forward reaction?

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AE₁-E₂

BE₁-E₃

CE₂-E₃

D(E₁-E₂) – (E₂ – E₃)

✓ Correct answer

A: E₁-E₂

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Topic: Reaction kinetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2010 Paper 1 Variant 2, question 6.

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