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Order of Reaction

The half-life...

Question

The half-life period for a reaction at initial concentration of $0.5 a n d 1.0 m o l e s l i t r e^{- 1} a r e 200 s e c a n d 100 s e c$ respectively.The order of the reaction is :

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Solution

$t_{\frac{1}{2}} α \frac{1}{a^{n - 1}} \frac{200}{100} = {(\begin{matrix} \frac{1}{0.5} \end{matrix})}^{n - 1}$
$2 = 2^{n - 1} n - 1 = 1 n = 2$

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