For the equation: MnO2 (s) + 2 CO (g) → Mn (s) + 2 CO2 (g)

Question

Calculate ΔG at 298K if MnO2 = 0.150 mol, Mn = 0.850 mol, CO = 0.250 M and CO2 = 0.500 M in a 1.25 L flask.

Answer 1

I assume this is not at equilibrium.
Calculate dGorxn from (n*dGo products) - (n*dGo reactants)

Then dG = dGo + RTlnQ where
Q = (CO2)^2/(CO)^2