Q3 / 60 · JEE Advanced 2014 (Paper 2) · Chemistry

For the elementary reaction $M \to N$ , the rate of disappearance of $M$ increases by a factor of $8$ upon doubling the concentration of $M$ . The order of the reaction with respect to $M$ is

A
$4$
Correct answer
B
$3$
C
$2$
D
$1$

Solution

\frac{r_{1}}{r_{2}} = \frac{1}{8} = \frac{{[M]}^{n}}{{[2 M]}^{n}} \Rightarrow n = 3

Hence, the correct answer is option: 'B'.

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