Predict the compositions of the coexisting liquid phases for the system methanol (1) + cyclohexane (2) at 285.15 K and 310.15 K. Let α be the methanol-rich phase. Compare quickly with the data from Fig. 19.12 and comment on the accuracy of the results. (Include a printout of your results including converged compositions and activity coefficients of both phases at one of the temperatures.)

(a) Use the MAB model.

(b) Use the SSCED model.

(c) Use the UNIFAC model.

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360 350 340 330 320 310 300 290 280 0 0.2 PREOS K₁j -0.06 ESD EOS k=0.03 0.6 0.4 Mole Fraction of Methanol 0.8 1 Figure 19.12 T-x-y diagram for the system methanol + cyclohexane. Data from Soerensen, J. M.; Arlt, W. Liquid-Liquid Equilibrium Data Collection; DECHEMA: Frankfurt/Main, 1979 Vol. V, Part 1.