(A) In a reaction mechanism,the rate-determining step $(RDS)$ is the slowest step.For the given reaction,the slow step is: $NO_2 + F_2 \to NO_2F + F$.

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(A) In a reaction mechanism,the rate-determining step $(RDS)$ is the slowest step.For the given reaction,the slow step is: $NO_2 + F_2 \to NO_2F + F$.The rate of the overall reaction is determined by the rate of this slow step.Therefore,the rate law is given by: $r = K [NO_2][F_2]$.

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

Medium

For the reaction $2NO_2 + F_2 \to 2NO_2F$,the following mechanism has been provided:
$NO_2 + F_2 \xrightarrow{slow} NO_2F + F$
$NO_2 + F \xrightarrow{fast} NO_2F$
Thus,the rate expression of the above reaction can be written as:

A
$r = K [NO_2][F_2]$
B
$r = K [NO_2]$
C
$r = K [NO_2]^2[F_2]$
D
$r = K [F_2]$

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Class 12 Questions

Class 12

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Chemical Kinetics

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Rate law , Rate constant , Order of Reaction and Molecularity

Rate of reaction for $2X + Y \rightarrow 3W + Z$ is $1.2 \times 10^{-4} \ mol \ dm^{-3} \ sec^{-1}$ when $[X] = [Y] = 0.6 \ mol \ dm^{-3}$. Calculate the value of the rate constant if the reaction is first order in $X$ and zero order in $Y$.

MediumMHT CET 2022

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For the reaction,$PCl_5 \longrightarrow PCl_3 + Cl_2$,the rate and rate constant are $1.02 \times 10^{-4} \ mol \ L^{-1} \ s^{-1}$ and $3.4 \times 10^{-5} \ s^{-1}$ respectively at a given instant. The molar concentration of $PCl_5$ at that instant is

MediumKCET 2024

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For the following homogeneous reaction scheme,the rate constant has units for the reaction $A + B \xrightarrow{K} C$:

Easy

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The diazonium salt decomposes as $C_6H_5N_2^+Cl^- \to C_6H_5Cl + N_2$. At $0 \ ^\circ C$,the evolution of $N_2$ becomes two times faster when the initial concentration of the salt is doubled. Therefore,it is:

Easy

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If the surface area of the reactants increases,then the order of the reaction:

Easy

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For the reaction $2NO_2 + F_2 \to 2NO_2F$,the following mechanism has been provided:$NO_2 + F_2 \xrightarrow{slow} NO_2F + F$$NO_2 + F \xrightarrow{fast} NO_2F$Thus,the rate expression of the above reaction can be written as:

Similar Questions

Rate of reaction for $2X + Y \rightarrow 3W + Z$ is $1.2 \times 10^{-4} \ mol \ dm^{-3} \ sec^{-1}$ when $[X] = [Y] = 0.6 \ mol \ dm^{-3}$. Calculate the value of the rate constant if the reaction is first order in $X$ and zero order in $Y$.

For the reaction,$PCl_5 \longrightarrow PCl_3 + Cl_2$,the rate and rate constant are $1.02 \times 10^{-4} \ mol \ L^{-1} \ s^{-1}$ and $3.4 \times 10^{-5} \ s^{-1}$ respectively at a given instant. The molar concentration of $PCl_5$ at that instant is

For the following homogeneous reaction scheme,the rate constant has units for the reaction $A + B \xrightarrow{K} C$:

The diazonium salt decomposes as $C_6H_5N_2^+Cl^- \to C_6H_5Cl + N_2$. At $0 \ ^\circ C$,the evolution of $N_2$ becomes two times faster when the initial concentration of the salt is doubled. Therefore,it is:

If the surface area of the reactants increases,then the order of the reaction:

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For the reaction $2NO_2 + F_2 \to 2NO_2F$,the following mechanism has been provided:
$NO_2 + F_2 \xrightarrow{slow} NO_2F + F$
$NO_2 + F \xrightarrow{fast} NO_2F$
Thus,the rate expression of the above reaction can be written as: