O-LevelChemistryRates of Reaction5070/12 · May/June 2017 · Q141 Mark

The energy profile diagram for the forward direction of a reversible reaction is shown. For the reverse reaction, which row correctly shows the sign of the activation energy and the type of enthalpy change?

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.

Anegative endothermic

Bnegative exothermic

Cpositive endothermic

Dpositive exothermic

✓ Correct answer

D: positive exothermic

Oracle Prep sorts past-paper questions by topic, so you can drill Rates of Reaction and see which topics are most likely to come up next.

Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2017 Paper 1 Variant 2, question 14.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content