WAEC Chemistry 2024 Objective — Question 15
Question 15 of 50 from the West African Examinations Council (WAEC) Chemistry 2024 Objective paper, with the correct answer and a full explanation.
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15. The reaction represented by the equation Ni²⁺(aq) + Fe(s) → Ni(s) + Fe²⁺(aq) is a redox reaction because
- A. Ni²⁺ ions are oxidized and Fe acts as an oxidizing agent
- B. ions are oxidized and Fe acts as a reducing agent
- C. Ni²⁺ ions are reduced and Fe acts as a reducing agent
- D. Ni ions are reduced and Fe acts as a reducing agentCorrect
Explanation
Ni²⁺ is reduced to Ni while Fe is oxidized to Fe²⁺; the species reduced (Ni²⁺) is the oxidizing agent and Fe, which is oxidized, is the reducing agent.
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