I took k=6.93x10^(-2) as given in ques and use the half life formula for 1st order kinetics and solve and finally get 10 min as a ans but right ans is 5 min and i m not able to get that..... Plse tell where i m doing mistake??
Answer
If the reaction has the form aA→B+C then the rate at which B and C are produced is 1/a of the rate at which A disappears, thus −1adAdt=dBdt=dCdt=kA
On this basis the half-life should be 5 minutes in your question.
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