WAEC Chemistry 2025 Objective — Question 2
Question 2 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
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Nickel is used in the hydrogenation of alkenes because it
- A. increases the yield of the product
- B. lowers the activation energy of the reactionCorrect
- C. makes the reaction more exothermic
- D. prevents a reverse reaction from occurring
Explanation
In hydrogenation reactions, nickel acts as a catalyst. Catalysts increase the rate of a chemical reaction by lowering the activation energy, providing an alternative pathway for the reaction to occur.
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