2. A binary system at 50 C was found to exhibit follow psat = 32.27 kPa ; In y = 0.67 x Pusat = 73.14 kPa ; In y2 = 0.67 x where y; is activity coefficient 2 2 (a) What are yo and ya at 50 C? (b) If species 2 is to be controlled at x2 = 0.005, what will be overall VLE pressure and species 2s corresponding Henry's law constant at 50 C? (c) A process stream containing this binary mixture at a concentration of z, = 0.65 (species 1 overall mole fraction) is to be fed into a flash vessel at 50 C, determine the range of pressures for the VLE operation. (d) Determine if this system exhibits an azeotrope. (e) If a liquid solution with xy = 0.75 is to be produced, what is the pressure to use? Does this pressure depend on the state of the feed (all vapor, all liquid, or part liquid part vapor?)