The mechanism of the reaction $A + 2B \to D$ is

$2B\xrightarrow{k}{B_2}$        [Slow]

${B_2} + A \to D$          [Fast]

The rate law expression, order with respect to $A$, order with respect to $'B'$ and overall order are respectively

  • A

    $K[B]^2, \,0,\, 2,\, 2$

  • B

    $K[A]' [B]^2,\, 1,\, 2, \,3$

  • C

    $K[A]^2, \,0, \,2,\, 2$

  • D

    $K[A]^2[B]^1, \,1, \,2, \,3$

Similar Questions

The reaction, $X + 2Y + Z \to N$ occurs by the following mechanism

$(i)$ $X + Y \rightleftharpoons M$      very rapid equilibrium

$(ii)$ $M + Z \to P$      slow

$(iii)$ $O + Y \to N$      very fast

What is the rate law for this reaction

The results given in the below table were obtained during kinetic studies of the following reaction:

$2 A + B \longrightarrow C + D$

Experiment $[ A ] / molL ^{-1}$ $[ B ] / molL ^{-1}$ Initial $rate/molL$ $^{-1}$ $\min ^{-1}$
$I$ $0.1$ $0.1$ $6.00 \times 10^{-3}$
$II$ $0.1$ $0.2$ $2.40 \times 10^{-2}$
$III$ $0.2$ $0.1$ $1.20 \times 10^{-2}$
$IV$ $X$ $0.2$ $7.20 \times 10^{-2}$
$V$ $0.3$ $Y$ $2.88 \times 10^{-1}$

$X$ and $Y$ in the given table are respectively :

 

  • [JEE MAIN 2020]

The incorrect order indicated against the rate of reaction is Rate Order

$A+B\xrightarrow{K}C$

Rate                        Order

Write differential rate expression of following reaction and give its order of reaction :

$H _{2} O _{2}+ I ^{-} \rightarrow H _{2} O + IO ^{-}$

$H _{2} O _{2}+ IO ^{-} \rightarrow H _{2} O + I ^{-}+ O _{2}$

$(a)$ Write general reaction and derive the units of rate constant. $(b)$ Based on that write the rate constant for zero, first and $2^{nd}$ order reaction.