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 :

  • [IIT 2014]
  • A

    $4$

  • B

    $3$

  • C

    $2$

  • D

    $1$

Similar Questions

The experimental data for reaction
$2A + B_2 \longrightarrow 2AB$

Exp. $[A]$ $[B_2]$ Rate $(mol\,L^{-1}\,S^{-1})$
$1$ $0.50$ $0.50$ $1.6 \times {10^{ - 4}}$
$2$ $0.50$ $1.00$ $3.2 \times {10^{ - 4}}$
$3$ $1.00$ $1.00$ $3.2 \times {10^{ - 4}}$

The rate law

For the reaction, $2A + B\,\to $ products , when the concentrations of $A$ and $B$ both were doubled, the rate of the reaction increased from $0.3\,mol\,L^{-1}\,s^{-1}$ to $2.4 \,mol\,L^{-1}\,s^{-1}.$ When the concentration of $A$ alone is doubled, the rate increased from $0.3\,mol\,L^{-1}\,s^{-1}$ to $0.6\,mol\,L^{-1}\,s^{-1}.$ Which one of the following statements is correct?

  • [JEE MAIN 2019]

Identify the reaction order from each of the following rate constants.

$(i)$ $k=2.3 \times 10^{-5} \,L \,mol ^{-1}\, s ^{-1}$

$(ii)$ $k=3 \times 10^{-4}\, s ^{-1}$

Which of the following reaction will have fractional order for $A_2$ or $B_2$ ?

Rate constant of reaction is $1.388 \times 10^{-3}\, mole^{-2}\,lit^{-2}\,sec^{-1}$ order of reaction will be