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Department
Chemistry
Course
CHM 2046
Professor
Christou
Semester
Spring

Description
1. a) The oxidation state decreases for oxidizing agent and increases for reducing agent during a redox reaction. b) The anode is where oxidation half-reaction occurs. Electrons are lost by the substance being oxidized and leave the cell at the anode. The cathode is where reduction half-reaction occurs. Electrons are gained by the substance being reduced and enter the cell at the cathode. c) A salt bridge allows ions to flow through both compartments and completes the circuit. 2. a) – – I  I 2 2e (1) 3+ – 2+ Fe + e  Fe (2) 3+ – 2+ (1)+2 × (2): 2Fe + 2I  2Fe + I 2 b) MnO + 8H + 5e → Mn + 4H O 2+ (1) 4 2 SO 2–+ H O → SO 2–+ 2H +2e – (2) 3 2 4 (1) × 2 + (2) × 5: 2MnO + 5SO
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