JEE Main Chemistry question

Chemistry Chemical Kinetics JEE Main

The following homogeneous gaseous reactions were experimentally found to be second order overall. 1. 2. 3. 4.

Which of these are most likely to be elementary reactions that occur in one step?

(A)3 only
(B)1 and 3
(C)1 and 4Correct
(D)3 and 4

Answer: (C)

Solution

Reaction 1, , with rate , has molecularity (2) matching its observed order (2), consistent with a single elementary bimolecular step. Reaction 4, , with rate

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Question ID VK-144294