CO(g) + Cl₂(g)COCl₂(g) Use the standard thermodynamic data in the tables linked above. Calculate G for this reaction at 298.15K if the pressure of COCl₂(g) is reduced to 15.20 mm Hg, while the pressures of CO(g) and Cl₂(g) remain at 1 atm. ANSWER: ____ kJ/mol