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For an exothermic reaction, the energy o...

For an exothermic reaction, the energy of activation of the reactants is

A

equal to the energy of activation of products

B

less than the energy of activation of products

C

greater than energy of activation of products

D

sometimes greater and sometimes less than that of the products

Text Solution

Verified by Experts

The correct Answer is:
B
Consider the diagram showing plot of potential energy vs reaction coordinate for an exothermic reaction:

For a reaction
`Delta_(r)H^(Ɵ)=(E_(a))_(b)`
For an exothermic reaction.
`Delta_(r)H^(Ɵ)is-ve`
Thus `(E_(a))_(f)lt(E_(a))_(b)`
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