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  • what will the hay -life  of a first-arder reaction if the late

what will the hay -life \left(t_{1 / 2}\right) of a first-arder reaction if the late constant of the reaction is 1.8 \times 10^{-2} 5^{-1}.
 

Option: 1

 38.5 seconds

 


Option: 2

 40 seconds
 


Option: 3

 28.5 seconds
 


Option: 4

 30 seconds.
 


Answers (1)

best_answer


for a first order Roan

\begin{aligned} & t_{1 / 2}=\frac{0.693}{k}=\frac{0.693}{1.8 \times 10^{-2}}=38.5 \text { seconds } \\ & t_{1 / 2}=38.5 \text { seconds } \end{aligned}

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vinayak

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