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lecture notes - 10/15/2010 An example of a PVT processes...

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10/15/2010 1 Friday September 24 Exam Thursday, Sept 30 at 6:30 DUAN G1B20 Wednesday, Sept 29- review in class Screencasts Read the book An example of a PVT processes Are they important PVT properties (phase changes) CH 4 Vapor 10 bar 300 K Methane gas at 10 bar and 300 K is in a piston- cylinder. If more and more weight is added to the system (P~∞), what happens? A. Gas becomes more dense B. Some liquid forms C. All the vapor becomes liquid D. All the vapor becomes solid Carbon Dioxide Temperature ( o C) Pressure (bar) Methane Compare isotherms at T r = 0.9, 1.0, 1.1 What causes this behavior? T r =T/T C
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10/15/2010 2 Isotherms for methane and ethane are similar, just the scales are different. Normalize by using reduced scales: use critical points. Vapor 0.1 mol Liquid 0.9 mol A piston-cylinder at 45°C and 0.5 bar contains 0.9 mol of hexane liquid and 0.1 mol of hexane vapor in equilibrium. The pressure is doubled at constant temperature by pushing down on the piston. What happens? A. Most of the vapor condenses B. All the vapor condenses, the liquid is below its saturation temperature C. All vapor condenses, the liquid is below its saturation pressure. D. The system contains only vapor
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This note was uploaded on 11/12/2010 for the course CHEN 3320 taught by Professor Falconer,j during the Fall '10 term at Colorado.

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lecture notes - 10/15/2010 An example of a PVT processes...

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