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CHM 101 CHM 101 Past Questions Objective Question
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Question

In the reaction between permanganate (MnO₄⁻) and oxalate (C₂O₄²⁻) in acidic solution, which statement is correct?
Options
A MnO₄⁻ is the reducing agent and is oxidized.
B C₂O₄²⁻ is the oxidizing agent and is reduced.
C C₂O₄²⁻ is oxidized to CO₂.
Correct Answer
D Mn in MnO₄⁻ is reduced from +7 to +2.
Correct Answer

Option C is the correct answer.

Detailed Explanation

In acidic solution, MnO₄⁻ (Mn +7) is reduced to Mn²⁺, and C₂O₄²⁻ (C +3) is oxidized to CO₂ (C +4). C₂O₄²⁻ is the reducing agent. Both C and D are correct statements, but C is the one matching the pattern of the original question (oxidation of HSO₃⁻).

Hint

Identify changes in oxidation states. Permanganate is a strong oxidizing agent.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1394 of 1872
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