Prbset10

# Prbset10 - Each side has a volume of 300 cm 3 The pressure...

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CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.: CHEG301 STUDENT: ___________________ COURSE: Thermodynamics INSTRUCTOR: Prof. Anderson SUBJECT: Problem Set 10 DUE: Wednesday, Oct. 31, 2007 1. A one-liter container, kept in a constant temperature bath at -10 ° C, has in it 20 grams of methane. 2.5 milligrams of ice are introduced into the container. After equilibrium is attained, what is the moisture content (mole fraction of water) in the gas phase? Data (all at -10 ° C): Ice: Vapor pressure is 1.95 mm Hg; Density is 0.998 gr/cm 3 Second Virial Coefficients in cm 3 /mol (methane = 1; water = 2): B 11 = -60; B 12 = -58; B 22 = -1800 2. A closed chamber, maintained at 40 ° C, consists of two equal parts, separated from each other by a membrane permeable only to helium.
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Unformatted text preview: Each side has a volume of 300 cm 3 . The pressure in the left side is 37.5 atm and the pressure in the right part is 84.5 atm. The left side is filled with 0.99 moles of ethane and 0.01 moles of helium; the right side is filled with 0.99 moles of nitrogen and 0.01 moles of helium. After equilibrium is attained, what are the mole fractions of helium in each part of the chamber? Assume that the virial equation truncated after the second term is applicable. Let 1 stand for helium, 2 for ethane and 3 for nitrogen. At 40 ° C the following second virial coefficients are reported (cm 3 /mole): B 11 = 17.17 B 12 = 24.51 B 22 = -169.23 B 13 = 21.97 B 33 = -1.55 B 23 = -44.39...
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