Calculate delta G and E cell under standard conditions?

Question

20.50) Calculate corresponding delta G and E cell under standard conditions?

If the equilibrium constant for a one-electron redox reaction at 298 K is 4.1×10^6, calculate the corresponding delta G and E0 cell under standard conditions.

Can someone help me find these two values? Delta G should be in kJ and E0 cell should be in V.

Answer 1

For the reaction 5Ce4+ + Mn2+ + 4H2O → 5Ce3+ + MnO4- + 8H+,  given E0(Ce4+/Ce3+) = 1.70V, E0(MnO4-/Mn2+) = 1.507V, calculate ΔG0 for this reaction ?              
a. -93.1 kJ
b. 93.1 kJ
c. 18.6 kJ
d. -18.6 kJ