The addition of a catalyst to a chemical reaction changes:
Correct answer: C. The activation energy
- A. The enthalpy
- B. The entropy
- C. The activation energy
- D. The free energy
Explanation
A catalyst provides an alternative reaction pathway with lower activation energy.This increases the reaction rate without affecting ΔH, ΔS, or ΔG.Option C is correct
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About Activation Energy and Activated Complex
Activation energy is the minimum energy reactant particles need to form the activated complex, or transition state, during a reaction. Energy profile diagrams show the forward and reverse activation energies, while catalysts provide an alternative pathway with lower activation energy without changing the reaction enthalpy.
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