Question

Half life of a 1st order reaction is 693s its rate constant will be

Answer 1

$ASSALAMUALAIKUM$

the half life of a first order reaction is 69.3 minute, the value of the rate constant k is
k=.693/t1/2
=.693/69.3 min-1
=10^-2min-1

it means that during this time period the concentration of this reaction is reduced to half.
it is calcilated using the formula
k=2.303/t log(N0/N)

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