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Effect on Kc

Assertion A: ...

Question

Assertion A: A catalyst has no effect on the state of equilibrium
Reason R: A catalyst influences the rates of both forward and backward reactions to the same extent.

A

Both Assertion and Reason are true and Reason is correct explanation of Assertion

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B

Both Assertion and Reason are true and Reason is not correct explanation of Assertion

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C

Assertion is true Reason is false

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D

Reason is true Assertion is false

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Solution

The correct option is A Both Assertion and Reason are true and Reason is correct explanation of Assertion
When a catalyst is present, the equilibrium is achieved faster but its magnitude remains unaffected. Thus the value of the equilibrium constant in presence of a catalyst is same as in absence of catalyst.
This is because, the catalyst influence the rate of forward reaction and reverse reaction to same extent.

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