A-LevelChemistryReaction kinetics9701/12 · Oct/Nov 2014 · Q81 Mark

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

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AE₁ - E₂

BE₂ - E₁

CE₂ - E₃

DE₃ - E₂

✓ 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 2014 Paper 1 Variant 2, question 8.

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