09.11 - Stable Roots and Saturation Conditions
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- Chapter 1 - Basic concepts
- Chapter 2 - The energy balance
- Chapter 3 - Energy balances for composite systems.
- Chapter 4 - Entropy
- Chapter 5 - Thermodynamics of Processes
- Chapter 6 - Classical Thermodynamics - Generalization to any Fluid
- Chapter 7 - Engineering Equations of State for PVT Properties
- Chapter 8 - Departure functions
-
Chapter 9 - Phase Equlibrium in a Pure Fluid
- 09.01 - Criteria for Phase Equilibrium
- 09.02 - The Clausius-Clapeyron Equation
- 09.03 - Shortcut Estimation of Saturation Properties
- 09.04 - Changes in Gibbs Energy with Pressure
- 09.05 - Fugacity and Fugacity Coefficient
- 09.06 - Fugacity Criteria for Phase Equilibria
- 09.07 - Calculation of Fugacity (Gases)
- 09.08 - Calculation of Fugacity (Liquids)
- 09.09 - Calculation of Fugacity (Solids)
- 09.10 - Saturation Conditions from an Equation of State
- 09.11 - Stable Roots and Saturation Conditions
- Chapter 10 - Introduction to Multicomponent Systems
- Chapter 11 - An Introduction to Activity Models
- Chapter 12 - Van der Waals Activity Models
- Chapter 13 - Local Composition Activity Models
- Chapter 14 - Liquid-liquid and solid-liquid equilibria
- Chapter 16 - Advanced Phase Diagrams
- Chapter 15 - Phase Equilibria in Mixtures by an Equation of State
- Chapter 17 - Reaction Equilibria
- Chapter 18 - Electrolyte Solutions
Selecting Stable Roots
Selecting Stable Roots (5:41) (msu.edu)
Understanding the relation between stable roots and the vapor pressure is a confusing aspect of working with cubic equations of state. When solving problems with enthalpy or entropy matching, it is important to remember to check for stability of the roots. See also the screencast for section 7.6.