Chemistry-Rate of Reaction

NEET Chemistry Rate of Reaction MCQ Question

Type: MCQ-numerical-Hard-Class 12

For a second-order reaction, if the initial concentration of reactant X is doubled, how does the rate of the reaction change?

A

The rate increases by a factor of 4.

B

The rate increases by a factor of 2.

C

The rate remains unchanged.

D

The rate decreases by a factor of 2.

Correct Answer

Option A

Detailed Explanation

For a second-order reaction, the rate is proportional to the square of the concentration of the reactant. Doubling the concentration of X results in the rate increasing by a factor of 4.

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