Which order of reaction obeys the relation t1-2-1-Ka-

The correct option is B SecondFor second order reaction, the integrated rate law expression is t= 1/Kx/a(a x) When a half fraction of a reaction is comple ...

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Standard XII

Chemistry

Elimination Reactions of Alkyl Halides

Which order o...

Question

Which order of reaction obeys the relation $t_{\frac{1}{2}} = \frac{1}{K a}$ ?

First

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Second

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Third

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Zero

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Solution

The correct option is B Second
For second order reaction, the integrated rate law expression is $t = \frac{1}{K} \frac{x}{a (a - x)}$
When a half fraction of a reaction is complete, $(a - x) = x$
Hence, $t_{\frac{1}{2}} = \frac{1}{K} \frac{1}{a}$

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Which order of reaction obeys the relation t12=1Ka?

The correct option is B SecondFor second order reaction, the integrated rate law expression is t=1Kxa(a−x)When a half fraction of a reaction is complete, (a−x)=xHence, t12=1K1a

Which order of reaction obeys the relation $t_{\frac{1}{2}} = \frac{1}{K a}$ ?

The correct option is B Second
For second order reaction, the integrated rate law expression is $t = \frac{1}{K} \frac{x}{a (a - x)}$
When a half fraction of a reaction is complete, $(a - x) = x$
Hence, $t_{\frac{1}{2}} = \frac{1}{K} \frac{1}{a}$