Thermodynamics

To solve this problem we must first calculate ΔG for the reaction, which is -2 ( -237 kJ / mol) = 474 kJ / mol. Knowing that ΔG = -nFE^o and n = 4, we calculate the potential is -1.23 V.

Knowing the Nernst Equation and realizing that the temperature is not 25^oC, we write that: E = E^o - (RT/nF) ln Q E^o for any concentration cell is zero so, after plugging in all the numbers we find that: E = 0.035 V.