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3. A two component system exhibits an azeotrope at 70 °C at x = 0.75. If...
are justified. 2. Experimental measurements of VLE for a two-component system at 100°C gives the following data: * = 0.30 P (kPa) .21 91 350.0 1.00 1.00 392.7 0.75 0.70 365.0 0.00 0.00 a. (5%) Use Raoult's law to predict the bubble pressure and vapor composition for this system at b. (10%) Using the three points from the table, calculate the coefficients in the 2-parameter Margules equation, assuming the modified Raoult's law is applicable. c. (10%) Using the result from...
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50 °C. The vapor pressures for the pure species are psat = 34.10 kPa and Pat = 36.30 kPa. a. (10%) Assuming Raoult's law, calculate the pressure range of the 2-phase region when the mole fraction of hexaflourobenzene is 0.8. b. (10%) Experiments show that this mixture at 50°C has an azeotrope. Show mathematically that Raoult's law is unable to predict an azeotropic behavior. c. (10%) Use the modified Raoult's law with the van...
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50°C. The vapor pressures for the pure species are Prat = 34.10 kPa and Pat = 36.30 kPa. a. (10%) Assuming Raoult's law, calculate the pressure range of the 2-phase region when the mole fraction of hexaflourobenzene is 0.8. b. (10%) Experiments show that this mixture at 50-C has an azeotrope. Show mathematically that Raoult's law is unable to predict an azeotropic behavior. c. (10%) Use the modified Raoult's law with the van Laar...
5. A mixture of ethanol (e) and toluene (t) in vapor-liquid equilibrium at 50 kPa behaves according to the following van Laar activity coefficient model: 1.757 1.757 Iny = and Iny, = = Does an azeotrope exist for this system at 50 kPa? If so, at what temperature and composition? If not, how do you know? Hint: because T is unknown, this one will be much easier to solve using an equation- solving program.
Limited vapor-liquid equilibrium data have been obtained for a solution of two slightly dissimilar liquids A and B over the temperature range 20 to 100°C. From these data it is found that the variation of the limiting activity coefficients (symmetric convention) with mperature can be represented by the empirical equation 10.0 t(° C) y is the activity coefficient at infinite dilution. Estimate the enthalpy of mixing wh ere of an equimolar mixture of A and B at 60°C Limited vapor-liquid...
8. Considering the given two component liquid mixture phase diagram, answer the following questions: Temperature 40% 80% B0% 100% 20% 80% 60% 40% 100% 0% 60% 20% A a. (3.pt.) What are the boiling points of A and B, respectively? b. (2 pt.) Which line (X1, X2, or X3) represents an evaporation step in a distillation process? c. (3 pt.) When a mixture of 30% A and 70% B boils, what will be the composition of the vapor above the...
CONFIDENTIAL BKC/1617/BKF2343 QUESTION 1 An equimolar vapor mixture of n-pentane and n-hexane at 110°C and 1 atm is fed into a condenser at a rate of 200 L min When the feed is cooled and compressed in the condenser, some of the vapor is condensed. The products are separated and discharged in separate streams. The vapor and liquid products at the top and the bottom of the condenser are(in equilibrium at 60°C and pressure P mmHg. The vapor product stream...
e. Consider a system which contains saturated liquid-vapor mixture of water at 50°C. The system is located in a place where the local atmospheric pressure is 98 kPa. What is the absolute (actual) pressure inside this system? If we want to express the pressure of the system as gage pressure or vacuum pressure, determine which one is more suitable for this case and calculate it.
1. A mixture of four alkenes (1-decene, 1-heptene, 1-nonene, and 1-octene) was analyzed by gas chromatography. Below, on the line, list the four alkenes in order of increasing retention time: 2. At 760.0 mm atmospheric pressure, a binary liquid mixture of components A and B gives the temperature composition diagram shown below. The liquid curve plots boiling point vs. composition of the liquid mixture. The vapor curve plots temperature vs. equilibrium vapor composition. A horizontal line on the diagram, such...
please answer clearly 1 (Lecture LOI) 50 m3 of a 35-C gas mixture with composition 98 miole percent air(3), 2 mole percent toluene(1) is contacted with 400 kg of 35°C pure n-decane(2). The vapor-liquid system is allowed to come to equilibrium isothermally at 35 oC at a constant pressure of 1.0 atm. What are the final compositions of the liquid and vapor phases? You should neglect dissolution of air in the liquid, but you must account for evaporation of n-decane....