Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If the rate constant for a first order reaction is 
, the time 
required for the completion of
of the reaction is given by
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Let the initial concentration 
After time 
, final concentration 
We know that,
On substituting the given values in above Eq. we get
Thus, option is correct.
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