JEE Advanced 2017 Chemistry question

In a bimolecular reaction, the steric factor P was experimentally determined to be 4.5. The correct option(s) among the following is(are)

(A)The activation energy of the reaction is unaffected by the value of the steric factorCorrect
(B)Experimentally determined value of frequency factor is higher than that predicted by Arrhenius equationCorrect
(C)Since P = 4.5, the reaction will not proceed unless an effective catalyst is used
(D)The value of frequency factor predicted by Arrhenius equation is higher than that determined experimentally

Answer: (A),(B)

Solution

The steric factor is , where the theoretical frequency factor comes from collision theory. (A) modifies only the pre-exponential factor; the activation energy is

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Question ID VK-026673