An early study of the hydrogen overpotential is that of H. Bowden and T. Rideal (Proc
Chapter 25, Problem 25.22(choose chapter or problem)
An early study of the hydrogen overpotential is that of H. Bowden and T. Rideal (Proc. Roy. Soc. A120, 59 (1928)), who measured the overpotential for H2 evolution with a mercury electrode in dilute aqueous solutions of H2SO4 at 25C. Determine the exchange current density and transfer coefficient,, from their data: j/(mA m2 ) 2.9 6.3 28 100 250 630 1650 3300 /V 0.60 0.65 0.73 0.79 0.84 0.89 0.93 0.96 Explain any deviations from the result expected from the Tafel equation.
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