ln1s08 - Lecture 1: Physical Equilibria-The Temperature...

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Physical Equilibria—The Temperature Dependence of Vapor Pressure Our first foray into equilibria is to examine phenomena associated with two phases of matter achieving equilibrium in which the free energy in each phase is the same and there is no change in the overall values of system state functions. The areas of physical equilibria we will investigate are: The interface between phases: gas Å Æ liquids Å Æ solid. Solution properties like freezing and boiling will be given a thorough thermodynamic treatment. Mixtures formed when phases are soluble or miscible in one another. Dissolving solids or gases in liquids or mixing two liquids. Colligative properties that derive from mixing of two phases. These are essential properties of biological and chemical systems. We will draw on the following theoretical treatments from CH 301: intermolecular force theory thermodynamics So review these concepts!! Specifically, review the intermolecular force and thermodynamic lecture notes and worksheets. Pay special attention to the introductory treatment of phases and phase transitions that are presented at various times during these lectures. Vapor Pressure Vapor pressure was introduced in the fall semester as a solution property and we learned that vapor pressure rankings could be qualitatively determined from a ranking of intermolecular forces. Definition of vapor pressure
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This note was uploaded on 05/01/2008 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas.

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ln1s08 - Lecture 1: Physical Equilibria-The Temperature...

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