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ceic3001_2010_T1_solution

# ceic3001_2010_T1_solution - SCHOOL OF CHEMICAL ENGINEERING...

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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 ). Question 2 a) Assuming Raoult's law to be valid, prepare a Pxy diagram for a temperature of 60 C and a Txy diagram for a pressure of 100 kPa for the n -pentane (1)/ n -heptane (2) binary system. Explain the procedure for constructing each type of diagram. Provide some sample Pxy and Txy data in a table. Include labels showing the bubblepoint and dewpoint curves. b) Using the diagrams constructed in part (a), determine the following: BUBL P at x 1 = 0.4, DEW P at y 1 = 0.9, BUBL T at x 1 = 0.2, and DEW T at y 1 = 0.9.

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Question 3 A soft drink manufacturer is trying to develop a new type of soda water containing 2 wt% CO 2 when it is sealed under pressure at a temperature of 10°C. The manufacturer proposes to package this soda water in a plastic bottle. The burst pressure of the plastic bottle is rated at 5 bar. Assuming that the soda water contains only CO 2 and water, is the plastic bottle suitable for this type of soda water?
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ceic3001_2010_T1_solution - SCHOOL OF CHEMICAL ENGINEERING...

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