(D) The rate of the reaction is determined by the slow step $(II)$:$r = k_2 [N_2O_2] [H_2]$Since $N_2O_2$ is an intermediate,we express its concentrat

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(D) The rate of the reaction is determined by the slow step $(II)$:$r = k_2 [N_2O_2] [H_2]$Since $N_2O_2$ is an intermediate,we express its concentration using the equilibrium constant $(K_{eq})$ from the fast step $(I)$:$K_{eq} = \frac{[N_2O_2]}{[NO]^2} \implies [N_2O_2] = K_{eq} [NO]^2$Substituting this into the rate expression:$r = k_2 (K_{eq} [NO]^2) [H_2]$Let $k = k_2 K_{eq}$,then the rate law is:$r = k [NO]^2 [H_2]$

Class 12 Chemistry Chemical Kinetics Rate law , Rate constant , Order of Reaction and Molecularity

Medium

For the reaction $2H_2 + 2NO \to N_2 + 2H_2O$,the following mechanism has been proposed:
$I$. $2NO \rightleftharpoons N_2O_2$ (fast)
$II$. $N_2O_2 + H_2 \xrightarrow{k_2} N_2O + H_2O$ (slow)
$III$. $N_2O + H_2 \to N_2 + H_2O$ (fast)
What will be the rate law of this reaction?

A
$k[NO][H_2]^2$
B
$k[NO][H_2]$
C
$k[NO]^0[H_2]^3$
D
$k[NO]^2[H_2]$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

Chemical Kinetics

Subtopic

Rate law , Rate constant , Order of Reaction and Molecularity

Which of the following reactions has an overall order of $1.5$?

MediumMHT CET 2026

View Solution

Why is the probability of a reaction with molecularity higher than $3$ very rare?

Easy

View Solution

For the reaction system $2NO_{(g)} + O_{2(g)} \to 2NO_{2(g)}$,the volume is suddenly reduced to half its initial value by increasing the pressure. If the reaction is of first order with respect to $O_2$ and second order with respect to $NO$,the rate of reaction will:

EasyAIEEE 2003

View Solution

Identify the rate law expression for the reaction $2 NO_{(g)} + Cl_{2(g)} \rightarrow 2 NOCl_{(g)}$ if the reaction is second order in $NO$ and first order in $Cl_2$.

MediumMHT CET 2023

View Solution

The unit of the rate constant for a second-order reaction is ....

Easy

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

For the reaction $2H_2 + 2NO \to N_2 + 2H_2O$,the following mechanism has been proposed:$I$. $2NO \rightleftharpoons N_2O_2$ (fast)$II$. $N_2O_2 + H_2 \xrightarrow{k_2} N_2O + H_2O$ (slow)$III$. $N_2O + H_2 \to N_2 + H_2O$ (fast)What will be the rate law of this reaction?

Similar Questions

Which of the following reactions has an overall order of $1.5$?

Why is the probability of a reaction with molecularity higher than $3$ very rare?

For the reaction system $2NO_{(g)} + O_{2(g)} \to 2NO_{2(g)}$,the volume is suddenly reduced to half its initial value by increasing the pressure. If the reaction is of first order with respect to $O_2$ and second order with respect to $NO$,the rate of reaction will:

Identify the rate law expression for the reaction $2 NO_{(g)} + Cl_{2(g)} \rightarrow 2 NOCl_{(g)}$ if the reaction is second order in $NO$ and first order in $Cl_2$.

The unit of the rate constant for a second-order reaction is ....

Vedclass Test Series

Exam Paper Generator

Online Exam Module

For the reaction $2H_2 + 2NO \to N_2 + 2H_2O$,the following mechanism has been proposed:
$I$. $2NO \rightleftharpoons N_2O_2$ (fast)
$II$. $N_2O_2 + H_2 \xrightarrow{k_2} N_2O + H_2O$ (slow)
$III$. $N_2O + H_2 \to N_2 + H_2O$ (fast)
What will be the rate law of this reaction?