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AIPMT MAINS2009Chemistry-Chemical Kinetics

AIPMT MAINS 2009 Chemistry First-order Reactions MCQ Question

Type: MCQ-numerical-Medium-Class 12

Half life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is:

A

0.5×10−2s−10.5 × 10-2 s^{-1}

B

0.5×10−3s−10.5 × 10-3 s^{-1}

C

5.0×10−2s−15.0 × 10-2 s^{-1}

D

5.0×10−3s−15.0 × 10-3 s^{-1}

Correct Answer

Option B

Detailed Explanation

The specific rate constant k for a first-order reaction is calculated using the formula k = 0.693 / t1/2.

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