3. Binary system acetonitrile(1)/nitromethane(2) conforms closely to Raoult's law. Vaporpressures for the pure species are given by the following Antoine equations:In P1sat/kPa=14.2724-2945.47t/°C+224.00In P2sat/kPa=14.2043-2972.64t/°C+209.00Prepare a Pxy diagram for a temperature of 75°C by calculating and plotting the mole fraction ofacetonitrile in the vapor phase y1, and the total pressure, P, for different values of X1 aspresented below:Mol fraction of acetonitrile in theliquid phase, X1Mol fraction of acetonitrile in theliquid phase, yTotal pressure, P(kPa)0.000.100.200.300.400.500.600.700.800.901.00Using your plot, estimate the pressure and liquid composition (X1 and X2) of this mixturewhen the vapor is 60-mol% acetonitrile.Using interpolation, calculate the pressure and X1 with the same given vapor compositionof acetonitrile. Compare your estimation and get the % error.

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Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter23: Polymeric Materials And Soft Condensed Matter

Section: Chapter Questions

Problem 14P

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In the system NaCl-H2O, a simple eutectic is observed at −21.1°C for a solution containing 23.3% by weight NaCl where NaCl•2H2O and ice crystallize out of the mixture. At a composition of 27% by weight of NaCl and at −9°C a peritectic point exists where the dihydrate decomposes to form anhydrous NaCl. The temperature coefficient of solubility of anhydrous NaCl is very small and positive. Make a rough sketch for the system showing clearly the phases in equilibrium in the various areas and along the curves of the diagram.
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