CHEM 233 Lecture Notes - Lecture 2: Watch Glass, Stereochemistry, Hexane

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10 Aug 2016
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Steam distillation of (s)-(+)-carvone from caraway seeds and (r)-(-)-carvone from. The boiling point of a substance is the temperature at which equilibrium vapor pressure of a liquid equals to the atmospheric pressure. Boiling point is an important physical property of each compound which determines the purity and identity of each compound. It is process when liquid bubbles and there is a spontaneous vaporization. Compounds with higher equilibrium vapor pressure have lower boiling points whereas compounds with lower equilibrium vapor pressure have higher boiling points. The importance of boiling points is crucial in steam distillation to separating the components of a mixture. The liquid boiling in a closed system increases the number of gas molecules until the rate of the molecules entering the gas phase and liquid phase equal out. This process of molecules in gas phase in a rapid motion collides against the walls of the vessel exerting pressure.