O-LevelChemistryRates of Reaction5070/12 · Oct/Nov 2020 · Q201 Mark

The energy profile diagram of a chemical reaction is shown. What is the value of the activation energy of the reaction?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

A-200 kJ/mol

B-100 kJ/mol

C+100 kJ/mol

D+200 kJ/mol

✓ Correct answer

C: +100 kJ/mol

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2020 Paper 1 Variant 2, question 20.

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