[SOLVED] Nernst Equation Applied to Half-Reactions The Nernst equation can be applied to half-reactions. Calculate the reduction potential (at 25°C) of the half-cell Cu/Cu2+ (1.9×10-4 M). (The half-reaction is Cu2+ + 2e- --> Cu. E° = 0.34 V) 0.34-[ (8.314)(298)/ (2)(96485)] * ln(1.9E-4) This produces an answer of 0.45 V which I am confident is the correct answer to this question but it says incorrect. Am I approaching this question wrong, or doing the calculations wrong?