(B) . According to the Arrhenius equation,$K = A e^{-E_a / RT}$,the rate constant $K$ depends on temperature. As temperature increases,the fraction of

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the fraction of molecules having energy in excess of the activation energy increases with temperature

(B) . According to the Arrhenius equation,$K = A e^{-E_a / RT}$,the rate constant $K$ depends on temperature. As temperature increases,the fraction of molecules having kinetic energy greater than the activation energy $(E_a)$ increases significantly. This factor,represented by $e^{-E_a / RT}$,is the primary reason for the rapid increase in the reaction rate.

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

Medium

The rate of gas phase chemical reactions generally increases rapidly with a rise in temperature. This is mainly because

KVPY 2011 All KVPY

A
the collision frequency increases with temperature
B
the fraction of molecules having energy in excess of the activation energy increases with temperature
C
the activation energy decreases with temperature
D
the average kinetic energy of molecules increases with temperature

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

Chemical Kinetics

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Collision theory, Energy of activation and Arrhenius equation

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KVPY 2011 Paper All KVPY years →

For a reversible reaction $A \rightleftharpoons B$,which one of the following statements is wrong from the given energy profile diagram?

MediumTS EAMCET 2008

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At temperature $T \ K$,the rate constant of a reaction is $1/10$th of the rate constant at temperature $2T \ K$. What will be the activation energy of this reaction (in $RT$)?

Medium

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Which among the following equations represents the Arrhenius equation?

MediumMHT CET 2017

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For the decomposition reaction of $N_2O_5$,the slope of the graph of $\log K$ versus $1/T$ is $-1.2 \times 10^4 \ K$. Calculate the activation energy $(E_a)$ of the reaction.

Medium

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According to the collision theory,which of the following statements is $NOT$ correct?

Easy

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The rate of gas phase chemical reactions generally increases rapidly with a rise in temperature. This is mainly because

Similar Questions

For a reversible reaction $A \rightleftharpoons B$,which one of the following statements is wrong from the given energy profile diagram?

At temperature $T \ K$,the rate constant of a reaction is $1/10$th of the rate constant at temperature $2T \ K$. What will be the activation energy of this reaction (in $RT$)?

Which among the following equations represents the Arrhenius equation?

For the decomposition reaction of $N_2O_5$,the slope of the graph of $\log K$ versus $1/T$ is $-1.2 \times 10^4 \ K$. Calculate the activation energy $(E_a)$ of the reaction.

According to the collision theory,which of the following statements is $NOT$ correct?

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