Rate law for the reaction, C_2H_5I_ (g) C_2H_ 4(g) + HI_ (g) is r = k[ C_2H_5I ] What is the order and molecularity of this reaction?

MHT CET 2025 Chemistry question

Rate law for the reaction, is What is the order and molecularity of this reaction?

(A)order and molecularity both are 1Correct
(B)order is 1 and molecularity is 2
(C)order and molecularity both are 2
(D)order is 2 and molecularity is 1

Answer: (A)

Solution

The order of reaction is the sum of the powers of concentration terms in the experimentally determined rate law: , so the order is 1. Molecularity is the number of reacting species colliding in the elementary step. The reaction C_2H_5IC_2H_4$

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Question ID VK-100600