?An early study of the hydrogen overpotential is that of H. Bowden and T. Rideal (Proc
Chapter 19, Problem P19D.5(choose chapter or problem)
An early study of the hydrogen overpotential is that of H. Bowden and T. Rideal (Proc. Roy. Soc., 59 (1928)), who measured the overpotential for \(\mathrm{H}_{2}\) evolution with a mercury electrode in dilute aqueous solutions of \(\mathrm{H}_{2} \mathrm{SO}_{4}\) at \(25^{\circ} \mathrm{C}\). Determine the exchange-current density and transfer coefficient, \(\alpha\), from their data:
\(\begin{array}{lllllllll}j /\left(\mathrm{mA} \mathrm{m}^{-2}\right) & 2.9 & 6.3 & 28 & 100 & 250 & 630& 1650 & 3300 \\\eta / \mathrm{V} & 0.60 & 0.65 & 0.73 & 0.79 & 0.84 & 0.89 & 0.93 & 0.96\end{array}\)
Text Transcription:
H_2
H_2 SO_4
25^circ C
alpha
j/(mA m^-2) & 2.9 & 6.3 & 28 & 100 & 250 & 630& 1650 & 3300 over eta/V & 0.60 & 0.65 & 0.73 & 0.79 & 0.84 & 0.89 & 0.93 & 0.96
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