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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.
Species
Mole fraction
Propylene
0.1
Propane
0.25
n-Butane
0.2
Isobutane
0.35
n-Pentane
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.
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