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JAMB Chemistry 2003 Question 24

Question 24

Rates of Reaction

Which of the following will change when a catalyst is added to a chemical reaction?

  1. A.The activation energy
  2. B.The potential energy of the reactants.
  3. C.The heat of reaction
  4. D.The potential energy of the products.
Show the answer and explanation

Answer: A (The activation energy)

Explanation

A catalyst provides a different pathway with a lower activation energy; the energies of reactants, products and ΔH stay the same.