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AP® Chemistry

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Moderate

Equilibrium and Energy

APCHEM-KWVKYV

Which of the following is TRUE concerning the forward and reverse directions of a chemical reaction?

A

The magnitude of $\Delta H$ is greater for the endothermic direction.

B

One direction will have a greater activation energy, ${ E }_{ a }$, than the other.

C

${E}_{a}$ is greater for the endothermic direction so that direction will always proceed at a slower rate than that of the exothermic direction.

D

A change in temperature will affect the rates of the forward and reverse directions in the same way.