JAMB Biology 2015 Objective — Question 48
Question 48 of 50 from the Joint Admissions and Matriculation Board (JAMB) Biology 2015 Objective paper, with the correct answer and a full explanation.
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MnO₂(s) + 4HCl(aq) → MnCl₂(aq) + Cl₂(g) + 2H₂O(l). In the reaction above, MnO₂ acts as a(n)
- A. catalytic agent
- B. oxidizing agentCorrect
- C. bleaching agent
- D. reducing agent
Explanation
The oxidation state of manganese decreases from +4 in MnO₂ to +2 in MnCl₂ (reduction), so MnO₂ is the oxidizing agent.
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