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Please I want part (e). I am done with all parts, only need (e) to be solved. QI (40 marks). A liquid mixture containing 25

Please I want part (e). I am done with all parts, only need (e) to be solved.

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QI (40 marks). A liquid mixture containing 25 mol% benzene and 75 mol% ethyl alcohol, in which components are miscible in all proportions, is heated at a constant pressure of 1 atm from a temperature of 60C to 90C. The T-x-y experimental data at 1 atm are as follows: Temperature, C: 78.4 77.5 75 72.5 70 68.5 67.7 68.5 72.5 75 77.5 80.1 Mole percent benzene in vapor: 0 7.5 28 42 54 60 68 73 82 88 95 100 Mole percent benzene in liquid: 0 1.5 5 12 22 31 68 81 91 95 98 100 (a) At what temperature does vaporization begin? (b) What is the composition of the first bubble of equilibrium vapor formed? (c) What is the composition of the residual liquid when 25 mol% has evaporated? Assume that all vapor formed is retained within the apparatus and that it is completely mixed and in equilibrium with the residual liquid. (d) Repeat part (c) for 90 mol% vaporized. (e) Repeat part (d) if, after 25 mol% is vaporized as in part (c), the vapor formed is removed and an additional 35 mol% is vaporized by the same technique used in part (c). (1) Plot the temperature versus the percent vaporized (from 0 to 100%) for parts (c) and (e). (g) Use the following vapor pressure data in conjunction with Raoult's and Dalton's laws to construct a T-x-y diagram. What do you conclude about the applicability of Raoult's law to this binary system? VAPOR PRESSURE DATA Vapor pressure, torr: 20 40 60 100 200 400 760 Ethanol, C: 8 19.0 26.0 34.9 48.4 63.5 78.4 Benzene, C: -2.6 7.6 15.4 26.1 42.2 60.6 80.1

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