Question

For the elementary reaction, $M\rightarrow N$, 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
• B. 3
• C. 2
• D. 1

Answer 1

Answer: (B)

3

Answer 2

$\frac{ r _{1}}{ r _{2}}=\frac{1}{8}=\frac{[ M ]^{ n }}{[2 M ]^{ n }} \Rightarrow n =3$