I do not want you to solve this problem for me. All I want to know is how the Gibbs free energy for this reaction at 298 K and 2 atm is equal to 5400 kJ/Kmol. How did we get this number?
a) One kmol of N2O4 dissociates to form an equilibrium ideal gas mixture of N2O4 and NO at 25°C, 2 atm. For N2O4 → 2NO, G = 5400 kJ/kmol at 25°C.