(D) The initial rate is given by $r = k[A]^2[B]$.When the concentration of $A$ is tripled,the new concentration $[A'] = 3[A]$.The new rate $r'$ is cal

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(D) The initial rate is given by $r = k[A]^2[B]$.When the concentration of $A$ is tripled,the new concentration $[A'] = 3[A]$.The new rate $r'$ is calculated as:$r' = k[A']^2[B] = k(3[A])^2[B] = k(9[A]^2)[B] = 9k[A]^2[B]$.Comparing the new rate with the initial rate,$r' = 9r$.Therefore,the rate increases by a factor of $9$.

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

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For a certain reaction,the rate $= k[A]^2[B]$. When the initial concentration of $A$ is tripled keeping the concentration of $B$ constant,the initial rate would:

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A
Increase by a factor of $3$
B
Decrease by a factor of $9$
C
Increase by a factor of $6$
D
Increase by a factor of $9$

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Chemical Kinetics

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Rate law , Rate constant , Order of Reaction and Molecularity

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If in a certain reaction,two different reactants take part,then:

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For a reaction $A + B \rightarrow \text{product}$,if $[A]$ is doubled keeping $[B]$ constant,the rate of reaction doubles. Calculate the order of reaction with respect to $A$.

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The half-life period of a $second$ order reaction is:

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Assertion : The kinetics of the reaction $mA + nB + pC \to m'X + n'Y + p'Z$ obey the rate expression as $\frac{dX}{dt} = k[A]^m[B]^n$.
Reason : The rate of the reaction does not depend upon the concentration of $C$.

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Which will be the unit of rate constant for the reaction having Rate $= K[A]^{\frac{1}{2}} \cdot [B]^{\frac{3}{2}}$ ?

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For a certain reaction,the rate $= k[A]^2[B]$. When the initial concentration of $A$ is tripled keeping the concentration of $B$ constant,the initial rate would:

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If in a certain reaction,two different reactants take part,then:

For a reaction $A + B \rightarrow \text{product}$,if $[A]$ is doubled keeping $[B]$ constant,the rate of reaction doubles. Calculate the order of reaction with respect to $A$.

The half-life period of a $second$ order reaction is:

Assertion : The kinetics of the reaction $mA + nB + pC \to m'X + n'Y + p'Z$ obey the rate expression as $\frac{dX}{dt} = k[A]^m[B]^n$.Reason : The rate of the reaction does not depend upon the concentration of $C$.

Which will be the unit of rate constant for the reaction having Rate $= K[A]^{\frac{1}{2}} \cdot [B]^{\frac{3}{2}}$ ?

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Assertion : The kinetics of the reaction $mA + nB + pC \to m'X + n'Y + p'Z$ obey the rate expression as $\frac{dX}{dt} = k[A]^m[B]^n$.
Reason : The rate of the reaction does not depend upon the concentration of $C$.