For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction
2N(g) + 3H2(g) <===> 2NH3(g)
the standard change in Gibbs free energy is G ° = -69.0 kJ/mol. What is G for this reaction at 298 K when the partial pressures are
PN2 = 0.100 atm, PH2 = 0.150 atm, and PNH3 = 0.700 atm