HG2317 Mock Final Exam-2.pdf - Adobe Acrobat Reader DC CHG2317 Decemb Answers (1).pdf 75% A mixture of liquid benzene and toluene contains 54.1 mol%...

pls help question is from introduction to chemical process

HG2317 Mock Final Exam-2.pdf - Adobe Acrobat Reader DCCHG2317 DecembAnswers (1).pdf75%A mixture of liquid benzene and toluene contains 54.1 mol% benzene at 90 *C and a pressure P. suppliedat a rate of 93.2 mol/s into a flash vessel (vaporizer), that is heated vessel that is maintained at a pressurePressel << Po. Once the stream is exposed to the reduced pressure in the unit, part of it evaporates. Theliquid and vapour stream leaving the vaporizer are at equilibrium at 75 *C and Pvessel. The product vapourstream contains 67.5 mol% benzene.Develop a process flow diagram that can be used to solve for mass and energy balances.Calculate the minimum value for the pressure P. (atm) required to keep the stream in liquid formuntil it enters the flash vessel vaporizer).c)Calculate the pressure Pvessel (atm), the mole fraction of benzene in the product liquid stream, andthe molar flow rates of the liquid and vapour products.d) Calculate the heat (kW) required for the flash vessel.ermodynamic data for Question 2:The vapour pressure of benzene p"(7) in mmHg = 10(6.89272-1203.531/(7+219,888))Tin cThe normal latent heat of vaporization of benzene: A/,(80.1 *C, 1 atm) = 30.77 kl/molThe average thermal heat capacity of liquid benzene: Cp = 0.144 kJ/(mol.C)The average thermal heat capacity of benzene vapour: Cp = 0.1 kJ/(mol.c)The vapour pressure of benzene p (7) in mmHg = 10(6.95805-1346.773/(7+219.693))The normal latent heat of vaporization of benzene: A/,(110.6C, 1 atm) = 33.47 kJ/molT in cThe average thermal heat capacity of liquid benzene: Cp = 0.176 kJ/(mol.c)The average thermal heat capacity of benzene vapour: Cpy = 0.129 kJ/(mol.c)