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Question

Rate of reaction can be expressed by Arrhenius equation as $$k=Ae^{-Ea/RT}$$. In this equation $$E_a$$ represents.


A
The energy above which all the colliding molecules will react
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B
The energy below which colliding molecules will not react
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C
The total energy of the reactant molecules at a temperature T
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D
The fraction of molecules with energy greater than the activation energy of the reaction
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Solution

The correct option is A The energy above which all the colliding molecules will react
By definition, activation energy is the energy required by molecules to react. so, $${ E }_{ a }$$ represents the energy below which colliding molecules will not react.

Chemistry
NCERT
Standard XII

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