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Prbset14 - CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO...

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CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.: CHEG5301 STUDENT: ___________________ COURSE: Thermodynamics INSTRUCTOR: Prof. Anderson SUBJECT: Problem Set 14 DUE: Wednesday, Dec. 3, 2008 1. Experimental data have been measured for the solution of benzene and poly-isobutylene (high molecular weight). At 60 ° C and at a volume fraction of benzene of 0.30, the partial pressure of benzene is 346 mm Hg. The saturation pressure of pure benzene is 398 mm Hg at the same temperature. (a) Using this data estimate the Florry parameter. (b) Since benzene is listed as a carcinogen, it is important to remove as much of this solvent as possible from the polymer product. After a drying operation, it is determined that the partial pressure of benzene is now 0.01 mm Hg at 60 ° C. Estimate the weight fraction of residual benzene in the polymer. At 60 ° C the specific volume of PIB is 1.1123 cm 3 /gr and that of benzene is 1.196 cm 3 /gr. 2. Estimate the solubility of naphthalene (N) at 25 ° C in a mixed solvent consisting of 70 mole % isopentane (I) and 30 mole % carbon tetrachloride (C).
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