ProblemSet9

# ProblemSet9 - Problem Set#9 CEM 383 Due at the start of...

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Problem Set #9 – CEM 383 Fall 2008 Due at the start of class on Monday, November 19. 1. An ideal solution is prepared by mixing one mole of benzene with two moles of toluene. At 60 ºC the vapor pressures of benzene and toluene are 51.3 and 18.5 kPa, respectively. (A) As the pressure is reduced, at what pressure will boiling begin? (B) What will be the composition of the first bubble of vapor? 2. At 1.013 bar pressure propane boils at –42.1 ºC and n-butane boils at –0.5ºC; the following vapor pressure data are available: Temperature (ºC) -31.2 -16.3 Pressure (kPa) propane 160.0 298.6 Pressure (kPa) n-butane) 26.7 53.3 Assuming that these substances form an ideal binary solution, (A) calculate the mole fractions of propane at which the solutions will boil at 1.013 bar pressure at –31.2 and –16.3 ºC. (B) Calculate the mole fractions of propane in the equilibrium vapor at these temperatures. (C) Plot the temperature mole fraction diagram at 1.013 bar, using these data and label the regions. 3.

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## This note was uploaded on 07/25/2008 for the course CEM 383 taught by Professor Mccracken during the Fall '07 term at Michigan State University.

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ProblemSet9 - Problem Set#9 CEM 383 Due at the start of...

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