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unsw ceic3001 tutrorial w1 advance thermo

unsw ceic3001 tutrorial w1 advance thermo - SCHOOL OF...

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SCHOOL OF CHEMICAL ENGINEERING CEIC3001 Advanced Thermodynamics and Separation Tutorial 1 Question 1 a) Using the vapour pressure data below, construct a Txy diagram for the binary system consisting of benzene (1) and toluene (2) at a total pressure of 1 atm (760 mmHg). It can be assumed that the system conforms to Raoult's law. Explain the procedure for constructing the Txy diagram. Provide some sample Txy data in a table. Include labels showing the bubblepoint and dewpoint curves. b) Calculate the bubblepoint of a subcooled liquid mixture containing 65 mol% benzene and 35 mol% toluene. Specify the type of VLE calculation required in your answer and show all working and relevant equations. c) What is the composition of the first bubble of vapour formed at the bubblepoint of the liquid mixture in part (b)? Pure component vapour pressure data (mmHg) sat i P 60 100 200 400 760 1520 T 2 ( C) 40.3 51.9 69.5 89.5 110.6 136.5 T 1 ( C) 15.4 26.1 42.2 60.6 80.1 103.8 Assume that a linear relationship exists between ln sat P and reciprocal temperature (K -1 ).

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