A liquid mixture consisting of 100 kmol of 60 mol% benzene, 25 mol% toluene, and 15 mol% o-xylene is flashed at 1 atm and 100°C.

(a) Compute the amounts of liquid and vapor products and their composition.

(b) Repeat the calculation at 100°C and 2 atm.

(c) Repeat the calculation at 105°C and 0.1 atm.

(d) Repeat the calculation at 150°C and 1 atm. Assume ideal solutions and use the vapor pressure curves of Figure for benzene and toluene. For o-xylene, draw a vapor pressure line that goes through the points (100.2oC, 200 torr) and (144oC, 760torr).

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10,000 6,000 4,000 2,000 П| o Critical points 1,000 600 400 Carbon dioxide 200 Triple point TП 100 Ethylene 60 40 Ethane Sulfur dioxide Water 20 (Solid CO2) Methanol 10 Propane 4 Methyl chloride i-Butane Ethyl chloride 0.6 0.4 n-Butane i-Pentane 0.2 Acetone n-Hepta ne 0.1 -100 -Acețic Acid- n-Pentane Ethanol Octane -o-Xylene- n-Propyl benzene п-Нехапe -75 KIn ulu Toluene: Benzene -50 -25 25 75 100 Temperature, °E 150 200 250 300 350 400 500 600 700 800 Vapor pressure, Ib/sqir ШІ n-Decane Nitrobenzene Dowtherm A Mercury