For the system 2 no2g n2o4g gdeg 11385 kjmol at 1000 k if

Question

For the system, 2 NO₂(g) ? N₂O₄(g), ?G^°= 113.85 kJ/mol at 1000 K. If the system was initialized using enough NO₂to create a partial pressure of 0.750 atm and enough N₂O₄to create a partial pressure of 0.450 atm, calculate the value of ?G at this temperature using these initial values.