O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2020 · Q201 Mark

The energy profile diagram for both the catalysed and uncatalysed reactions between N2 and H2, in the Haber process, is shown. [Energy profile diagram with labels A, B, C, D] What is the activation energy for the formation of NH3 in the presence of a catalyst?

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.

AEnergy difference labelled A

BEnergy difference labelled B

CEnergy difference labelled C

DEnergy difference labelled D

✓ Correct answer

C: Energy difference labelled C

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, Oct/Nov 2020 Paper 1 Variant 1, question 20.

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