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In a first order reaction, the concentra...

In a first order reaction, the concentration of the . reactant is decreased from 1.0M to 0.25M in 20 minute. The rate constant of the reaction would

A

`10 mi n^(-1)`

B

`6.93 mi n^(-1)`

C

`0.693 mi n^(-1)`

D

`0.0693 mi n^(-1)`

Text Solution

Verified by Experts

`t= 2.303/klog. (a)/((a-x))`
`:. K =2.303/20log. (1)/0.25`
`- 0.06931 min^(-1)`
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