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Phase Equilibrium Thermodynamics

NPTEL and Indian Institute of Technology, Kharagpur via YouTube


This is an introductory course in Thermodynamics and is one of the basic subjects to understand interfacial mass transfer and separation processes like distillation, solvent extraction, etc. The course introduces the concepts of chemical potential and fugacity and emphasizes the principles governing equilibrium for single and multicomponent systems. It discusses ideal as well as non-ideal solutions and deals with the entire range of phase miscibility (completely miscible to totally immiscible). There is a well-balanced coverage of physical concepts, mathematical operations along with examples and exercise problems of practical importance. After completion of the course, the students will be able to apply the basic principles of thermodynamics, the laws, and the pertinent equations to engineering design of mass transfer equipment.


Introduction (Contd.).
First Law of Thermodynamics.
Second Law of Thermodynamics.
Second Law of Thermodynamics (Contd.).
Entropy Change during Spontaneous Processes.
Criteria of Spontaneity.
Criteria of Spontaneity (Contd.).
Thermodynamic Network.
Thermodynamic Network (Contd.).
Gibbs free energy as a function of temperature and pressure.
P-v-T behaviour of gases.
P-v-T behaviour (contd1.).
P-v-T behaviour (contd2.).
P-v-T behaviour (contd.).
Tutorial 2.
Property estimation from P-v-T behaviour.
Property estimation (contd.).
Concept of chemical potential.
Chemical potential (contd.).
Homogeneous open systems.
Homogeneous open systems (contd.).
Heterogeneous Closed Systems.
Tutorial 1.
Concept of fugacity.
Fugacity (contd.).
Estimation of Fugacity Coefficients.
Fugacity of Condensed Phase.
Mixtures contd.
Partial molar properties.
Partial molar properties (contd.).
Partial molar fugacity.
Ideal solutions.
Ideal solutions (contd.).
Ideal solutions (contd.).
Ideal solutions (contd.).
Non-ideal solutions.
Non-ideal solutions (contd.).
Non-ideal solutions (contd.).
Non-ideal solutions (contd.).
Non-ideal solutions (contd.).
Deviations from ideal dilute solutions.
Thermodynamic Consistency Test of VLE Data.
Retrograde Condensation.
Phase Equlibrium for Mass Transfer Processes.
Partial and Complete Immiscibility (Contd.).
Partial and Complete Immiscibility of Liquid Mixtures.

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Phase Equilibrium Thermodynamics



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