Catalyst does not change:

A. Rate constant A.

B. Mechanism B.

C. Enthalpy C.

D. Activation energy D.

Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

A catalyst does not change the enthalpy of a reaction.

Key Details:
A catalyst speeds up a reaction by lowering the activation energy, but it does not alter the overall energy difference between reactants and products, which is the enthalpy. It provides an alternative pathway with a lower energy barrier, allowing the reaction to proceed faster.

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Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

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