Assertion: A catalyst increases the rate of reaction without itself undergoing any permanent chemical change. Reason: A catalyst changes the Gibbs energy (Δ G) of the reaction and equilibrium constant of the reaction.

Question

Assertion: A catalyst increases the rate of reaction without itself undergoing any permanent chemical change. Reason: A catalyst changes the Gibbs energy (Δ G) of the reaction and equilibrium constant of the reaction. (A) If both assertion and reason are true and reason is the correct explanation of assertion. (B) If both assertion and reason are true but reason is not the correct explanation of assertion. (C) If assertion is true but reason is false (D) If both assertion and reason are false.

Tardigrade Admin · Accepted Answer

A catalyst does not alter the Gibbs energy and equilibrium constant of the reaction. It catalyses forward and backward reaction to the same extent so that equilibrium state remains same but reaches earlier.

Q. Assertion : A catalyst increases the rate of reaction without itself undergoing any permanent chemical change. Reason : A catalyst changes the Gibbs energy (ΔG) of the reaction and equilibrium constant of the reaction.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false

If both assertion and reason are false.

A catalyst does not alter the Gibbs energy and equilibrium constant of the reaction. It catalyses forward and backward reaction to the same extent so that equilibrium state remains same but reaches earlier.

Q. Assertion : A catalyst increases the rate of reaction without itself undergoing any permanent chemical change.
Reason : A catalyst changes the Gibbs energy $(Δ G)$ of the reaction and equilibrium constant of the reaction.