A solution of MnO₄^2- is electrolytically reduced to Mn³⁺. A current of 8.46 amp is passed through the solution for 15.0 minutes. What is the number of moles of Mn³⁺ produced in this process? (1 faraday = 96,485 coulombs)

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Quizplus · Accepted Answer

The charge passed is calculated as current (8.46 A) multiplied by time (15.0 min converted to seconds, i.e., 900 s), which equals 7614 C. The reduction of MnO₄²⁻ to Mn³⁺ involves a 3-electron change. Therefore, the moles of Mn³⁺ produced is 7614 C divided by (3 × 96485 C/mol), which equals approximately 0.0263 mol.

A Solution of MnO42- Is Electrolytically Reduced to Mn3+

A Solution of MnO₄^2- Is Electrolytically Reduced to Mn³⁺