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Question

Assertion :If the activation energy of reaction is zero, temperature will have no effect on the rate constant. Reason: Lower the activation energy faster is the reaction.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The Arrhenius expression is k=AeEa/RT.

When the activation energy is zero, the term eEa/RT becomes equal to 1. Hence, the rate constant becomes independent of the temperature.

When the value of the activation energy is low, the value of the rate constant is higher. Hence, the rate of the reaction is also high.

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