For a chloroform (1) + ethanol (2) system at 55C, a Margules equation has been written as

Question:

For a chloroform (1) + ethanol (2) system at 55°C, a Margules equation has been written as G^E/RT = (0.5579x₁ + 1.5254x₂) x₁ x₂ (Gmehling and Onken, 1977). Calculate the pressure and vapor-phase composition of the system when x₁ = .25. What would be the predicted pressure and vapor-phase composition if you treated the liquid as an ideal solution?

CI H-C-CI CI Chloroform