Problem 5: Diethyl ether and ethanol Vapor-liquid equilibrium data for mixtures of diethyl ether and ethanol at 721.85 k

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Problem 5 Diethyl Ether And Ethanol Vapor Liquid Equilibrium Data For Mixtures Of Diethyl Ether And Ethanol At 721 85 K 1 (94.4 KiB) Viewed 53 times

Problem 5: Diethyl ether and ethanol Vapor-liquid equilibrium data for mixtures of diethyl ether and ethanol at 721.85 kPa are given in the following table: y! momol] [mol moll 0.06500 0.25100 0.11900 0.36000 0.12700 т [K] 400.15 396.35 395.65 386.15 384.65 383.15 381.05 380.15 379.15 378.15 0.30300 0.32300 0.35900 0.55500 0.57500 0.60200 0.66400 0.75900 0.36300 0.44700 0.56500 0.72300 0.93300 0.84200 0.96700 a) Use the given data to construct a T-xy diagram for this system. b) A temperature measuring device is used for a two-phase mixture at equilibrium reads 115°C at the system pressure iofs 721.85 kPa. Use the T-xy diagram to estimate the mole fractions of ethanol in the liquid and vapor phases. c) An equimolar mixture is fed to an evacuated vessel and allowed to come to equilibrium at 390K and 721.85 kPa. Estimate (1) the molar compositions of each phase and (2) The percentage of the total moles in the vessel that are in the vapor phase. d) Use Raoult's law to estimate the bubble-point temperture and vapor composition in equilibrium with an equimolar liquid mixture. e) Use Raoult's law to estimate the dew-point temperature and liquid composition in equilibrium with an equimolar mixture. f) How would the Thubble and Tdew would change if composition of diethyl ether got increased to 0.6