Consider the reaction of iodine with manganese dioxide 3I2(s) + 2MnO2(s) + 8OH–(aq) 6I–(aq) + 2MnO4(aq) + 4H2O(l) The equilibrium constant for the overall reaction is 8.30 × 10–7. Calculate ΔG° for the reaction at 25°C.