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  • The rate constant for a first order reaction is  . The ti

The rate constant for a first order reaction is \mathrm{20 \; min^{-1}} . The time required for the initial concentration of the reactant to reduce to its \mathrm{\frac{1}{32}} level is ______ \mathrm{10^{-2}} . (Nearest integer)

(Given : ln 10 = 2.303 log 2 = 0.3010)

Option: 1

17


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

\begin{aligned} & \mathrm{t}=\frac{1}{20} \ln 32 \\ \\& =\frac{2.303 \times 5 \times 0.3010}{20}=17.33 \times 10^{-2} \\ \\& \approx 17 \times 10^{-2} \end{aligned}

Posted by

Sanket Gandhi

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