Consider the Reaction: 2 NO₂ (G)→N₂O₄ (G) D G ° = - 5.4

Consider the reaction:
2 NO₂ (g) →N₂O₄ (g) D G ° = - 5.4 kJ/mol What is the Gibbs Free Energy Change, D G , under non-standard conditions for this reaction at 25 ° C if the partial pressure of NO₂ equals 0.40 atm and the partial pressure of N₂O₄ equals 1.6 atm?

A) D G = - 11 kJ/mol
B) D G = - 3.9 kJ/mol
C) D G = - 2.9 kJ/mol
D) D G = - 2.0 kJ/mol
E) D G = 0.30 kJ/mol