Prbset11 - CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.:...

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CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.: CHEG5301 STUDENT: ___________________ COURSE: Thermodynamics INSTRUCTOR: Prof. Anderson SUBJECT: Problem Set 11 DUE: Wednesday, Nov. 5, 2008 1. Given the following empirical expression for the molar density of a binary mixture: ρ =+ + + + aa xa x 01 12 1 2 31 3 find the corresponding expressions for V and 1 V . 2 2. For the system of acetone(1) and n-hexane(2) at 20 ° C, the following data are available: G RT xx x x E =+ 1 2 17448 18012 .. bg P sat 1 24 20 = .k P a a P sat 2 1595 = P At 20 ° C calculate the total pressure and vapor composition which would be in equilibrium with liquid mixtures at each of the following compositions: x 1 = 0.10, x 1 = 0.63, & x 1 = 0.90. Assume that the vapor phase behaves ideally. Based on these calculations, how would you characterize this binary system? 3. In older literature x and y data for binary VLE are sometimes represented by smoothing equations of the form: α 12 2 21 2 1 1 = ++ ax bx where 12 is the relative volatility and the
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This note was uploaded on 08/26/2010 for the course CHEG 5301 taught by Professor Anderson during the Fall '08 term at UConn.

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