Physical chem take home exam
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CHM360chp5.pdf
• They are very useful to discuss distillation.
• The pressure is maintained constant. • A is the more volatile component:
TA*<TB* • In fractional distillation, boiling and
condensation cycles are repeated many times.
• Temperature-composition diagrams for systems containing two partially immiscible liquids.
• Consider the diagram at right for hexane and nitrobenzene mixtures.
• Tuc is the upper critical temperature, that is, the highest T at which we can see phase separation.
• Liquid and solid phases present at temperatures under the boiling point.
• Consider the phase diagram at right for two components.
• The isopleth at e corresponds to the eutectic composition, i. e., the mixture with the lowest melting point.
F = 5-P
P =1, F =4 p,T,xA,xB
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