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Adding a catalyst to a reaction at equil...

Adding a catalyst to a reaction at equilibrium

A

changes Q

B

changes `K_(eq)`

C

changes both `Q` and `K_(eq)`

D

changes neither `Q` nor `K_(eq)`

Text Solution

Verified by Experts

The correct Answer is:
D
Adding a catalyst to a reaction at equilibrium has no effect on the value of Q and `K_(aq)` because a catalyst affects the activation energy of both forward and reverse reactions equally. It changes both rate constants `(K_(f)` and `K_(b))` by the same factor. So their ratio, `K_(aq)`, does not change.
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