Chapter 21, Problem 21.11QP

In the Mond process for the purification of nickel, CO is passed over metallic nickel to give Ni(CO)₄:

$\text{Ni}(s)+4\text{CO}(g)\stackrel{}{\rightleftharpoons }{\text{Ni(CO)}}_4(g)$

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