Consider the Reaction of Iodine with Manganese Dioxide

question 53

Multiple Choice

Consider the reaction of iodine with manganese dioxide. 3I₂(s) + 2MnO₂(s) + 8OH^-(aq) 6I^-(aq) + 2MnO₄^-(aq) + 4H₂O(l)
The equilibrium constant for the overall reaction is 8.3 × 10^-7. What is E°_cell for the reaction at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol^-1)

• A) -0.36 V
• B) -0.18 V
• C) -0.12 V
• D) -0.060 V
• E) +0.12 V

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