Chemical Kinetics Part 3

Section: Chemistry

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Question : 14 of 24

Marks: +1, -0

A \rightarrow B

(first reaction)

C \rightarrow D

(second reaction)

Consider the above two first-order reactions. The rate constant for first reaction at 500 K is double of the same at 300 K . At 500 K ,

50 \%

of the reaction becomes complete in 2 hour. The activation energy of the second reaction is half of that of first reaction. If the rate constant at 500 K of the second reaction becomes double of the rate constant of first reaction at the same temperature; then rate constant for the second reaction at 300 K is

\_\_\_\_

\times 10^{-1}

^{-1}

(nearest integer).

[28 Jan 2026 Shift 2]

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