A-LevelChemistryChemical energetics9701/12 · Oct/Nov 2022 · Q91 Mark
The reaction pathway for the forward reaction of a reversible reaction is shown. [Figure 9.1] Which statement is correct?
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.
AThe activation energy of the reverse reaction is +80 kJ mol⁻¹.
BThe enthalpy change for the forward reaction is +30 kJ mol⁻¹.
CThe enthalpy change for the forward reaction is +50 kJ mol⁻¹.
DThe enthalpy change for the reverse reaction is +30 kJ mol⁻¹.
✓ Correct answer
A: The activation energy of the reverse reaction is +80 kJ mol⁻¹.
Practise more questions on this topic
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.
Sign up free →