Question

Which of the following statements is not correct with reference to a catalyst?

• A. A catalyst does not increase the rate at which equillibrium is attained.
• B. A catalyst does not alter the value of equilibrium constant of a reversible reaction.
• C. A catalyst accelerates a reaction but undergoes no net chemical change.
• D. A catalyst does not initiate a chemical reaction.

Hint:

Catalysts are like GPS: they find a faster route to the same destination (Equilibrium)!

Answer 1

The Correct Option is A

Step 1: Concept A catalyst provides an alternative pathway with a lower activation energy for a reaction.

Step 2: Meaning It affects the kinetics (speed) but not the thermodynamics (stability) of the reaction.

Step 3: Analysis Option (B), (C), and (D) are true: a catalyst doesn't change $K_{eq}$, remains chemically unchanged, and cannot start a non-spontaneous reaction. Option (A) is false because a catalyst increases the rate of both forward and backward reactions equally, thus helping equilibrium to be reached faster.

Step 4: Conclusion The incorrect statement regarding catalyst function is option (A). Final Answer: (A)