Calculate the anodic charge transfer overpotential for the oxygen half-reaction, (1/2)02(g) + 2H+ + 2e = H2O(l) on Pt in 1 mol/L H2SO4(aq) solution at 25 °C if the exchange current density is 10-6 A/cm2, the transfer coefficient is 0.75, the current density is 0.1 A/cm2 and the limiting current density is 0.2 A/cm2 A) 8.90 mV B) 0.383 V C) 0.592 V Points Earned: Correct Answer(s): C 0.0/4.0

Fig: 1