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A first order reaction is 20% completed in 10 minutes. Calculate : The time taken for the reaction to go to 75% completion?

A first order reaction is 20% completed in 10 minutes. Calculate : The time taken for the reaction to go to 75% completion?

Grade:12

1 Answers

rishabh
27 Points
7 years ago

let the intial concentration of A = 1

k=2.303/t*log(a/a'')    given a''=.80 then t=10 

and by putting it into the expression value of k=2.303/100

now after 75% completion a''=0.25

on calculating t= 60 min <-------------- ans

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