(A) Activation energy $(E_a)$ is defined as the minimum extra amount of energy absorbed by the reactant molecules so that their total energy becomes e

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The energy added to the molecules so that their energy becomes equal to the threshold energy.

(A) Activation energy $(E_a)$ is defined as the minimum extra amount of energy absorbed by the reactant molecules so that their total energy becomes equal to the threshold energy $(E_T)$.Mathematically,$E_a = E_T - E_{\text{average}}$.

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

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The activation energy is ..........

A
The energy added to the molecules so that their energy becomes equal to the threshold energy.
B
The energy required for molecules to react.
C
The energy possessed by molecules so that they can undergo successful collisions.
D
The average kinetic energy of the molecules.

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Class 12 Questions

Class 12

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Chemical Kinetics

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Collision theory, Energy of activation and Arrhenius equation

An endothermic reaction with high activation energy for the forward reaction is given by the diagram:

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For an effective collision to occur,the colliding molecules must possess:

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For a chemical reaction,the rate of reaction doubles when the temperature increases by $10\,^oC$. If the temperature is increased from $10\,^oC$ to $100\,^oC$,the rate of reaction will increase by a factor of .....

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Assertion : According to transition state theory for the formation of an activated complex,one of the vibrational degrees of freedom is converted into a translational degree of freedom.
Reason : Energy of the activated complex is higher than the energy of reactant molecules.

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The rate of a chemical reaction doubles with every $10^{\circ}C$ rise in temperature. If the reaction is carried out in the vicinity of $22^{\circ}C$,the activation energy of the reaction is (Given $R = 8.3 \ J \ K^{-1} \ mol^{-1}$,$\ln 2 = 0.69$ and $\ln 3 = 1.1$)

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The activation energy is ..........

Similar Questions

An endothermic reaction with high activation energy for the forward reaction is given by the diagram:

For an effective collision to occur,the colliding molecules must possess:

For a chemical reaction,the rate of reaction doubles when the temperature increases by $10\,^oC$. If the temperature is increased from $10\,^oC$ to $100\,^oC$,the rate of reaction will increase by a factor of .....

Assertion : According to transition state theory for the formation of an activated complex,one of the vibrational degrees of freedom is converted into a translational degree of freedom.Reason : Energy of the activated complex is higher than the energy of reactant molecules.

The rate of a chemical reaction doubles with every $10^{\circ}C$ rise in temperature. If the reaction is carried out in the vicinity of $22^{\circ}C$,the activation energy of the reaction is (Given $R = 8.3 \ J \ K^{-1} \ mol^{-1}$,$\ln 2 = 0.69$ and $\ln 3 = 1.1$)

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Assertion : According to transition state theory for the formation of an activated complex,one of the vibrational degrees of freedom is converted into a translational degree of freedom.
Reason : Energy of the activated complex is higher than the energy of reactant molecules.