Calculate the diffusion overpotential for hydrogen formation, 2H+(aq) + 2e- = H2(g) at current density of 0.25 A/cm2 and temperature of 25 °C, if the limiting current is 1 A/cm2 A) -7.40 mV B) -0.31 mV C) -3.70 mV Points Earned: Correct Answer(s): C 4.0/4.0

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