Q.

In a reaction, the threshold energy is equal to

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a

Activation energy – normal energy of reactants

b

Normal energy of reactants – activation energy

c

Activation energy + normal energy of reactants

d

Average kinetic energy of molecules of reactants

answer is A.

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Detailed Solution

Activation energy = Threshold energy - Average Kinetic energy of reacting species.

So, the threshold energy of a reaction is equal to the sum of activation energy and normal energy of the reactants.

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