A binary system of species 1 and 2 consists of vapor and liquid phases in equilibrium at temperature T. The overall mole fraction of species 1 in the system is z1=0.60 at temperature T. In y1 = 0.85x3 In y2 = 0.85x? Psat = 42.3 kPa Pşat = 79.7 kP Assuming the validity of the modified Raoult's Law, (a) Determine the range of pressure that this system can exist as two phases at given T and Z1. (b) For liquid mole fraction x1 = 0.47, find the pressure P and the molar fraction V of the system that is vapor. (c) Show whether or not the system exhibits an azeotrope. If an azeotrope is formed, find the azeotropic composition and pressure.

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