Predict the Pxy behavior for a mixture of cyclohexane (1) + 1-butanol (2) at 383.15 K using the Peng-Robinson equation of state. Compare the predictions to the experimental data given in Table P12-25. Determine a “best fit” binary in teractionparameter (k₁₂ ) that best matches the equation of state pressures to the experimental pressures. Plot those new predictions on the same curve. Comment on your results.

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H₂C H₂C CH₂ CH₂ H₂ Cyclohexane TABLE P12-25 Vapor-liquid equilibrium of cyclohexane (1) + 1-butanol (2) at 383.15K. P[kPa] 77.754 121.107 153.897 178.521 196.896 210.448 220.123 226.387 229.212 228.093 222.040 HHHH III H-C-C-C-C-OH | | | | HH HH 1-butanol 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 Y₁ 0.4117 0.5779 0.6563 0.7017 0.7522 0.7792 0.7984 0.8261 0.8750 Based on data from R. S. Ramalho and J. Delmas, J. Chem.Eng Data 13, 161 (1968).