1. What is the composition of vapor that is in equilibrium with a liquid mixture with the following composition at 250 K? What is the pressure? Assume ideal behavior.
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Species
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Mole fraction
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|
Propylene
|
0.1
|
|
Propane
|
0.25
|
|
n-Butane
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0.2
|
|
Isobutane
|
0.35
|
|
n-Pentane
|
0.1
|
2. A liquid mixture containing 40% cyclohexane, 20% benzene, 25% toluene, and 15% n-heptane is in equilibrium with its vapor at 1 bar. Determine the temperature and the vapor composition.