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  • For an endothermic reaction, energy of activation is Ea and enthalpy of reaction is H (both of these in

For an endothermic reaction, energy of activation is Ea and enthalpy of reaction is \DeltaH (both of these in kJ/mol). Minimum value of Ea will be

Option: 1

Equal to zero


Option: 2

less than \Delta H


Option: 3

Equal to \Delta H


Option: 4

More than \Delta H


Answers (1)

best_answer

Activation Energy - The minimum kinetic energy that reactants must have in order to form products.

Description:

E.g.: In a gas phase reaction numerous collisions take place but only a tiny proportion that has sufficient energy to cross the energy barrier leads to product formation.

 

As it is clear from the figure below, the Ea has to be more than  for an endothermic reaction.

In endothermic reactions,, the PE of products is more than that of reactants.

The Correct answer is option 3.

Posted by

Rakesh

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