Statement I: Catalyst does not affect the equilibrium composition of a reaction mixture.
Statement II: It does not appear in the balanced chemical equation or in the equilibrium constant expression.

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Statement I is correct and statement II is incorrect.

Statement I is incorrect and statement II is correct.

Both statements I and II are incorrect.

Both statements I and II are correct.

answer is A.

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Detailed Solution

Catalyst does not affect the equilibrium composition of a reaction mixture. It does not appear in the balanced chemical equation or in the equilibrium constant expression. Its concentration remain constant, i.e. it is regenerated just after completing the reaction hence its quantity remain unchanged.

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