5. The following is a set of VLE data for the system methanol (1) and benzene (2) at 90°C. Methanol (1) - Benzene (2) T=90°C Experimental Data P, mmHg X1 1865 0.117 0.502 2218 0.376 0.618 2273 0.549 0.650 2292 0.707 0.689 2208 0.856 0.765 (a) Find parameter values for the Margules equation. Assume an ideal vapor phase. (b) Determine vapor-phase composition and pressure prediction at 90°C_using the Margules equation with xX1 = 0.549

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