Question
Asked Sep 22, 2019

A first order reaction has a half life 445.44 seconds. What is the rate constant in reciprocal seconds?

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Step 1

The half-life of the first order reaction is 445.44 seconds.

 

The half-life and rate constant are related by

 

0.693
1/2
К
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0.693 1/2 К

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Step 2

Therefore the rate constant of the first order reaction will be

 

K=0.693
445.44s1.55x10-3s-1
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K=0.693 445.44s1.55x10-3s-1

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Step 3

Substituting the value of...

K0.691.55x103 s
445.44s
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K0.691.55x103 s 445.44s

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