Given below are two statements: one labelled as Assertion A and other is labelled as Reason R:
Assertion A: A reaction can have zero activation energy
Reason R: The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy.

Question

Given below are two statements: one labelled as Assertion A and other is labelled as Reason R:

Assertion A: A reaction can have zero activation energy

Reason R: The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy.

Quantrex Academy · Accepted Answer

Correct answer: A. A is false but R is true.

Activation energy is defined as the minimum amount of extra energy required by a reacting molecule to get converted into a product. If E _ a = 0 , then according to Arrhenius equation k = Ae ^ - E _ a / RT = Ae ^ 0 = A . This implies that every collision results into a chemical reaction which cannot be true. So, a reaction cannot have zero activation energy.

Given below are two statements: one labelled as Assertion A and...

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