Question: 6. A liquid mixture containing 25 mole% benzene, 65 mole% toluene, and 10 mole% ethylbenzene is fed to a flash vessel at a rate of

6. A liquid mixture containing 25 mole% benzene, 65 mole% toluene, and 10 mole% ethylbenzene is fed to a flash vessel at a rate of 100 mol/s. Assume that the system obeys Raoult's law. Determine the molar composition and flow rate (mol/s) of both the vapour and liquid streams if the flash vessel operates at 105 C and 1 atm. Answer: Vapour - 39.7 mol/s; yb = 0.360; yt = 0.588; YEB = 0.052; Liquid - 60.3 mol/s; XB = 0.177; XT = 0.0.691; XEB= = 0.131

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