(C) In the Arrhenius equation $k = A e^{-E_a / RT}$,$E_a$ represents the activation energy.Activation energy is defined as the minimum extra amount of

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the energy above which all the colliding molecules will react

(C) In the Arrhenius equation $k = A e^{-E_a / RT}$,$E_a$ represents the activation energy.Activation energy is defined as the minimum extra amount of energy absorbed by the reactant molecules so that their energy becomes equal to the threshold energy,allowing them to react and form products.Therefore,it is the energy barrier that colliding molecules must overcome to react.

Class 12 Chemistry Chemical Kinetics Collision theory, Energy of activation and Arrhenius equation

Easy

The rate of a reaction can be expressed by the Arrhenius equation as:
$k = A e^{-E_a / RT}$
In this equation,$E_a$ represents:

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A
the total energy of the reacting molecules at a temperature,$T$
B
the fraction of molecules with energy greater than the activation energy of the reaction
C
the energy above which all the colliding molecules will react
D
the energy below which all the colliding molecules will react

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Chemical Kinetics

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Collision theory, Energy of activation and Arrhenius equation

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For the reaction $X \rightleftharpoons Y$,the pre-exponential factors for the forward and backward reactions are equal. What will be the equilibrium constant of the reaction?

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Fill in the blank :
$1.$ In collision theory the molecules are hard .........
$2.$ In a reality the molecules are hard ..........
$3.$ Collision take place with .......... species.

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$A$ sample of milk splits after $60 \; min.$ at $300 \; K$ and after $40 \; min.$ at $400 \; K$ when the population of $Lactobacillus \; acidophilus$ in it doubles. The activation energy (in $kJ / mol$) for this process is closest to ............. $kJ / mol$.
(Given: $R = 8.3 \; J \; mol^{-1} \; K^{-1}$,$\ln(1.5) = 0.405$)

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In a first order reaction at $27\,^oC$ and $47\,^oC$,$50\%$ of the reaction is complete in $30\,\min$ and $10\,\min$ respectively. Calculate the energy of activation $(E_a)$.

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Activation energy is defined as:

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The rate of a reaction can be expressed by the Arrhenius equation as:$k = A e^{-E_a / RT}$In this equation,$E_a$ represents:

Similar Questions

For the reaction $X \rightleftharpoons Y$,the pre-exponential factors for the forward and backward reactions are equal. What will be the equilibrium constant of the reaction?

Fill in the blank :$1.$ In collision theory the molecules are hard .........$2.$ In a reality the molecules are hard ..........$3.$ Collision take place with .......... species.

In a first order reaction at $27\,^oC$ and $47\,^oC$,$50\%$ of the reaction is complete in $30\,\min$ and $10\,\min$ respectively. Calculate the energy of activation $(E_a)$.

Activation energy is defined as:

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The rate of a reaction can be expressed by the Arrhenius equation as:
$k = A e^{-E_a / RT}$
In this equation,$E_a$ represents:

Fill in the blank :
$1.$ In collision theory the molecules are hard .........
$2.$ In a reality the molecules are hard ..........
$3.$ Collision take place with .......... species.