Determine the model parameters for the two-suffi x and the three-suffi x Margules equations using the liquid–vapor equilibrium data for a binary system of benzene (1)–cyclohexane (2) at 10°C. Mole fractions of liquid vs. total pressure are reported in Table E8.9A.

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TABLE E8.9A Cyclohexane X1 0 0.0610 0.2149 0.3187 0.4320 0.5246 0.6117 0.7265 0.8040 0.8830 0.8999 1 Measured Px Data for Benzene (1)- (2) at 10C Y 0 0.0953 0.2710 0.3600 0.4453 0.5106 0.5735 0.6626 0.7312 0.8200 0.8382 1 P[Pa] 6344 6590 6980 7140 7171 7216 7140 6974 6845 6617 6557 6073