At 1200K, Kp=0.25 for the reaction:
2NO2(g) + O2(g) = 2NO3
Calculate the equilibrium partial pressures of NO2, O2, and NO3 produced from an initial mixture in which PNO2 = PO2=0.40 atm and PNO3=0. (Hint: Use the method of successive approximations to solve.)