O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2023 · Q141 Mark

Under certain conditions, nitrogen reacts with oxygen to form N2O. 2N2(g) + O2(g) ⇋ 2N2O(g) The reaction pathway diagram is shown. What is the activation energy of the reverse 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-447 kJ/mol

B-283 kJ/mol

C+141.5 kJ/mol

D+283 kJ/mol

✓ Correct answer

D: +283 kJ/mol

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 2023 Paper 1 Variant 1, 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