Exams › JEE Main › Chemistry

The addition of a catalyst during a chemical reaction alters which of the following quantities?

1. Entropy
2. Internal energy
3. Enthalpy
4. Activation energy

Correct answer: Activation energy

Solution

A catalyst speeds up a chemical reaction by lowering the activation energy required for the reaction to occur. This is because the catalyst provides an alternative reaction pathway with a lower energy barrier.

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