?The transfer coefficient of a certain electrode in contact with \(\mathrm{M}^{3+}\) and
Chapter 19, Problem E19D.1(a)(choose chapter or problem)
The transfer coefficient of a certain electrode in contact with \(\mathrm{M}^{3+}\) and \(\mathrm{M}^{4+}\) in aqueous solution at \(25^{\circ} \mathrm{C}\) is 0.39. The current density is found to be \(55.0 \mathrm{\ mA} \mathrm{\ cm}^{-2}\) when the overpotential is 125mV. What is the overpotential required for a current density of \(75 \mathrm{\ mA} \mathrm{\ cm}^{-2}\) ? Hint: With this overpotential the current is entirely anodic, and eqn 19D.5a applies.
Text Transcription:
M^3+
M^4+
25^circ C
55.0 mA cm^-2
75 mA cm^-2
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