Consider the formation of silver oxide ag2o from its

Question

Consider the formation of silver Oxide (Ag₂O) from its elements. At 298K,  ΔG_f° = -11.3kJ/mol and ΔH_f° = -31.1 kJ/mol. At a very low partial pressure of oxygen of p(O₂) = 10^-6atm, is the formation of silver oxide spontaneous in the reverse direction? What is the value of ΔG?According to the answer key, ΔG = 5.81 kJ/mol.