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  • The time required for 100% completion of a zero order reaction is? (Where [A] is the initial concentration of A and k is the rate constant)<div

The time required for 100% completion of a zero order reaction is?

(Where [A] is the initial concentration of A and k is the rate constant)

Option: 1

\mathrm{[A]k}


Option: 2

\mathrm{2[A]k}


Option: 3

\mathrm{\frac{[A]}{k}}


Option: 4

\mathrm{\frac{[A]}{2k}}


Answers (1)

best_answer

For zero order equation, rate law is given as   

\mathrm{\Rightarrow [A]_{t}= [A]_{0}-kt}

Now, time taken for 100% completion 

[A]_{t}=0, [A]_{0}=[A]

\mathrm{0=[A]-kt\: \Rightarrow t=\frac{[A]}{k}}

Therefore, option(3) is correct

Posted by

Ritika Harsh

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