Two unimolecular reactions, I and II, have the same rate constant at 25 °C but Ea for reaction I is — Kinetics Chemistry Question
Question
Two unimolecular reactions, I and II, have the same rate constant at 25 °C but Ea for reaction I is larger than Ea for reaction II. Which statement about these two reactions is correct?
A.
k for reaction I is the same as k for reaction II at all temperatures.
B.
k for reaction I is larger than k for reaction II at lower temperatures but smaller at higher temperatures.
C.✓ Correct
k for reaction I is smaller than k for reaction II at lower temperatures but larger at higher temperatures.
D.
k for reaction I is larger than k for reaction II at temperatures both lower and higher than 25 °C.
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