Chemistry · May / June 2022 · Paper 11 · Question 18

For the forward reaction of a reversible reaction, the enthalpy change of reaction, ΔH, is –50 kJ / mol and the activation energy, Ea, is +60 kJ / mol. What is the activation energy of the reverse reaction?

1. A–110 kJ / mol
2. B–10 kJ / mol
3. C+10 kJ / mol
4. D+110 kJ / mol

As printed in the paper