5: Phase Equilibria
- Page ID
- 456185
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- 5.1: A Phase Diagram Summarizes the Solid-Liquid-Gas Behavior of a Substance
- A good map will take you to your destination with ease, provided you know how to read it. A map is an example of a diagram, a pictorial representation of a body of knowledge. In science they play a considerable role. Next to plots and tables diagrams are an important means of making information and/or theoretical knowledge accessible.
- 5.2: Gibbs Energies and Phase Diagrams
- Gibbs energy is a continuous function as a function of temperature. The derivative, however, is discontinuous during phase changes.
- 5.3: The Chemical Potentials of a Pure Substance in Two Phases in Equilibrium
- When two phases are in thermodynamic equilibrium for a pure substance, the two phases must have the same chemical potential. This can be used to define the phase boundary between the phases, known as the Clausius-Clapeyron equation.
- 5.4: The Clausius-Clapeyron Equation
- The Clausius-Clapeyron Equation and allows us to estimate the vapor pressure at another temperature, if the vapor pressure is known at some temperature, and if the enthalpy of vaporization is known.
- 5.E: Phase Equilibria (Exercises)
- These are homework exercises to accompany Chapter 23 of McQuarrie and Simon's "Physical Chemistry: A Molecular Approach" Textmap.