What is the cell potential for the reaction Mg(s) + Fe2+(aq) -> Mg2+(aq) + Fe(s) at 79°C when [Fe2+] = 2.80 mol/L and [Mg2+] = 0.310 mol/L? Assume that the standard cell potential does not change with temperature.
a) -2.71 V
b) -1.73 V
c) -0.47 V
d) 0.47 V
