In the Mond process for the purification of nickel, carbon monoxide is combined with heate...

In the Mond process for the purification of nickel, carbon monoxide is combined with heated nickel to produce Ni(CO)4, which is a gas and can therefore be separated from solid impurities:

Given that the standard free energies of formation of CO(g) and Ni(CO)4(g) are -137.3 and -587.4 kJ/mol, respectively, calculate the equilibrium constant of the reaction at 80°C. Assume that is temperature independent.