Homework_6_Thermo - depend on mole fraction if Raoult’s...

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Homework 6 Thermo ll Fall 2010 Due: Oct 28, 2008 in class. 1. The Wilson Equation is given on p. 436 as 9.5-11. (a) Show that when limits are taken, then sensible results occur for G EX . For example, what is predicted for lim x 1 1 and does the outcome make sense? (b) What does the Wilson Equation attempt to account for that distinguishes it from the one constant Margules? (c) If only the first term of the Wilson Equation is used, will the Gibbs-Duhem test will be passed? Show the steps and see if your guess is substantiated or not. 2. 9.30. In part (a) also plot how the fugacities of each component in the liquid phase would
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Unformatted text preview: depend on mole fraction if Raoult’s Law was followed through the whole composition range. Where does Raoults Law work well even for this nonideal system? Note that Henry’s and Raoults Law are two common simplifications and work pretty well for many systems. Be sure to know how they fall out of general thermodynamic theory. Their utility in the limits of composition for real systems should be apparent from your plot in this problem. 3. 10.1-2 (A basic VLE thermo application)....
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