A-LevelChemistryChemical energetics9701/12 · May/June 2019 · Q81 Mark

A reaction pathway diagram is shown. [Figure 8.1] Which row is correct? enthalpy change of the forward reaction activation energy of the reverse reaction A K M B K O C L O D P M

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.

Aenthalpy change of the forward reaction: K, activation energy of the reverse reaction: M

Benthalpy change of the forward reaction: K, activation energy of the reverse reaction: O

Centhalpy change of the forward reaction: L, activation energy of the reverse reaction: O

Denthalpy change of the forward reaction: P, activation energy of the reverse reaction: M

✓ Correct answer

B: enthalpy change of the forward reaction: K, activation energy of the reverse reaction: O

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

Topic: Chemical energetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2019 Paper 1 Variant 2, question 8.

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