Prbset12

Prbset12 - CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.:...

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CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.: CHEG301 STUDENT: ___________________ COURSE: Thermodynamics INSTRUCTOR: Prof. Anderson SUBJECT: Problem Set 12 DUE: Wednesday, Nov. 14, 2007 1. AT 42 ° C the heat of mixing of 1 mole of water and 1 mole of ethanol is -82.0 cal. The partial pressure of water above the solution is 0.821 and that of ethanol is 0.506 , where P HO sat 2 P EtOH sat P sat is the vapor pressure of the corresponding pure liquid. Assume vapors behave as ideal gases. Compute the excess entropy of mixing. 2. Construct the P-x 1 -y 1 diagram for the system acetone(1)/ n -hexane(2) at 45 ° C from the following data: G RT xx x x E 12 1 2 16352 15061 .. bg =+ Pk P a P a sat 1 67 3 = . sat 2 452 = The vapor phase may be assumed to behave ideally. 3. At 35.17 ° C, infinite dilutions activity coefficients are reported for the system aceton(1) & chloroform(2). γ 1 03 = and 6 . 2 046 = At this same temperature, the pure component vapor pressures are 351.6 mm Hg and 298.6
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This note was uploaded on 08/26/2010 for the course CHEG 301 taught by Professor Anderson during the Fall '07 term at UConn.

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