The Redox Reaction of Peroxydisulfate with Iodide Has Been Used

question 8

Multiple Choice

The redox reaction of peroxydisulfate with iodide has been used for many years as part of the iodine clock reaction. If E°_cell= 1.587 V and E° of the cathode half-cell is 0.536 V, what is E° of the anode half-cell? S₂O₈^2-(aq) + 2H⁺ + 2I ^-(aq) → 2HSO₄^-(aq) + I₂(aq)

• A) -1.051 V
• B) -2.123 V
• C) 1.051 V
• D) 2.123 V
• E) None of these choices is correct.

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