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25: Extension 16 - Vapor-Solution Phase Diagrams

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    • 25.1: Raoult's Law and Ideal Mixtures of Liquids
      This page deals with Raoult's Law and how it applies to mixtures of two volatile liquids. It covers cases where the two liquids are entirely miscible in all proportions to give a single liquid - NOT those where one liquid floats on top of the other (immiscible liquids). The page explains what is meant by an ideal mixture and looks at how the phase diagram for such a mixture is built up and used.
    • 25.2: Phase Diagrams for Binary Mixtures
      As suggested by the Gibbs Phase Rule, the most important variables describing a mixture are pressure, temperature and composition. In the case of single component systems, composition is not important so only pressure and temperature are typically depicted on a phase diagram. However, for mixtures with two components, the composition is of vital important, so there is generally a choice that must be made as to whether the other variable to be depicted is temperature or pressure.
    • 25.3: Liquid-Vapor Systems - Raoult’s Law
      Liquids tend to be volatile, and as such will enter the vapor phase when the temperature is increased to a high enough value (provided they do not decompose first!) A volatile liquid is one that has an appreciable vapor pressure at the specified temperature. An ideal mixture continuing at least one volatile liquid can be described using Raoult’s Law.

    This page titled 25: Extension 16 - Vapor-Solution Phase Diagrams is shared under a not declared license and was authored, remixed, and/or curated by Andrea Allgood Carter.

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