Consider the following reaction,

$2 H _2( g )+2 NO ( g ) \rightarrow N _2( g )+2 H _2 O ( g )$

which following the mechanism given below:

$2 NO ( g ) \underset{ k _{-1}}{\stackrel{ k _1}{\rightleftharpoons}} N _2 O _2( g )$

$N _2 O _2( g )+ H _2( g ) \stackrel{ k _2}{\rightleftharpoons} N _2 O ( g )+ H _2 O ( g )$

$N _2 O ( g )+ H _2( g ) \stackrel{ k _3}{\rightleftharpoons} N _2( g )+ H _2 O ( g )$

(fast equilibrium)

(slow reaction)

(fast reaction)

The order of the reaction is

  • [IIT 2024]
  • A

    $3$

  • B

    $4$

  • C

    $5$

  • D

    $6$

Similar Questions

Write unit of rate constant of following reaction :

$1.$ $\frac {5}{2}$ order

$2.$  $n$ order

Consider the kinetic data given in the following table for the reaction $A + B + C \rightarrow$ Product.

Experiment No. $\begin{array}{c}{[ A ]} \\ \left( mol dm ^{-3}\right)\end{array}$ $\begin{array}{c}{[ B ]} \\ \left( mol dm ^{-3}\right)\end{array}$ $\begin{array}{c}{[ C]} \\ \left( mol dm ^{-3}\right)\end{array}$ Rate of reaction $\left( mol dm ^{-3} s ^{-1}\right)$
$1$ $0.2$ $0.1$ $0.1$ $6.0 \times 10^{-5}$
$2$ $0.2$ $0.2$ $0.1$ $6.0 \times 10^{-5}$
$3$ $0.2$ $0.1$ $0.2$ $1.2 \times 10^{-4}$
$4$ $0.3$ $0.1$ $0.1$ $9.0 \times 10^{-5}$

The rate of the reaction for $[ A ]=0.15 mol dm ^{-3},[ B ]=0.25 mol dm ^{-3}$ and $[ C ]=0.15 mol dm ^{-3}$ is found to be $Y \times 10^{-5} mol dm d ^{-3} s ^{-1}$. The value of $Y$ i. . . . . . .

  • [IIT 2019]

If the concentration is expressed in moles per litre, the unit of the rate constant for a first order reaction is

The instantaneous rate of disappearance of $MnO_4^-$ ion in the following reaction is $4.56\times10^{-3}\,Ms^{-1}$,  $2MnO_4^-+ 10I^-+ 16 H^+ \to  2 Mn^{2+} + 5I_2 + 8H_2O$ The rate of appearance $I_2$ is

Half-life period of a first order reaction is $1386$ seconds. The specific rate constant of the reaction is

  • [AIPMT 2009]