(C) The initial rate law is given by $r = K[A][B][C]^2$. If the concentration of $A$ is halved,the new concentration becomes $[A]' = \frac{[A]}{2}$. T

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(C) The initial rate law is given by $r = K[A][B][C]^2$. If the concentration of $A$ is halved,the new concentration becomes $[A]' = \frac{[A]}{2}$. The new rate of reaction $r'$ is given by $r' = K[A]'][B][C]^2 = K(\frac{[A]}{2})[B][C]^2$. Substituting the initial rate expression,we get $r' = \frac{1}{2} K[A][B][C]^2 = \frac{1}{2} r$. Therefore,the rate of reaction decreases $\frac{1}{2}$ times.

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

Medium

The rate law for a reaction between reactants $A$,$B$,and $C$ is $r = K[A][B][C]^2$. If the concentration of $A$ is halved,then the rate of reaction:

MHT CET 2022 All MHT CET

A
increases $\frac{1}{2}$ times
B
remains the same
C
decreases $\frac{1}{2}$ times
D
increases $2$ times

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Class 12

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Chemical Kinetics

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Rate law , Rate constant , Order of Reaction and Molecularity

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The rate law for a reaction between reactants $A$,$B$,and $C$ is $r = K[A][B][C]^2$. If the concentration of $A$ is halved,then the rate of reaction:

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