Chemistry · May / June 2017 · Paper 12 · Question 14
5070Exothermic and endothermic reactions
The energy profile diagram for the forward direction of a reversible reaction is shown. [energy profile diagram with axes labelled 'energy' and 'progress of reaction', showing activation energy and ΔH] For the reverse reaction, which row correctly shows the sign of the activation energy and the type of enthalpy change?
- Anegative, endothermic
- Bnegative, exothermic
- Cpositive, endothermic
- Dpositive, exothermic
As printed in the paper
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Correct answer: D. positive, exothermic
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