15. Ea for the uncatalyzed reaction O3(g) + O(g) → 2O2 is 14.0 kJ. Ea for the same reaction when catalyzed is 11.9 kJ. What is the ratio of the rate constant for the catalyzed reaction to that for the uncatalyzed reaction at 25℃? Assume that the frequency factor A is the same for each reaction.
(A) 215
(B)51
(C) 2.3
(D) 532
(E)0.25
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