The transfer coefficient of a certain electrode in contact with M2+ and M3+ in aqueous solution at 25 °C is 0.42. The current density is found to be 17.0 mA cm2 when the overpotential is 105 mV. What is the overpotential required for a current density of 72 mA cm−2? Hint: See hint to Exercise E19D.1(a).

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