The property of a chemical reaction that is affected by the presence of a catalyst is?

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A. activation energy
B. free energy
C. equilibrium position
D. enthalpy change

Correct Answer: Option A

A. activation energy

Explanation

The activation energy is the amount of energy that is required to form products in a reaction. The presence of a catalyst helps to speed up the reaction such that the energy needed for the reaction is reduced.

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