Thermodynamic Principles. Introduction and Definition of Terms. The First Law of Thermodynamics. The Second Law of Thermodynamics. The Statistical Interpretation of Entropy. The Fundamental Equations and Their Relationships. Heat Capacity, Enthalpy, Entropy, and the Third Law of Thermodynamics. Phase Equilibria. Phase Equilibrium in a One-Component System. The Behavior of Gases. The Behavior of Solutions. Gibbs Free Energy Composition and Phase Diagrams of Binary Systems. Reactions and Transformations of Phases. Reactions Involving Gases. Reactions Involving Pure Condensed Phases and a Gaseous Phase. Reaction Equilibria in Systems Containing Components in Condensed Solution. Electrochemistry. Thermodynamics and Phase Transformations. Appendices. A. Selected Thermodynamic and Thermochemical Data. B. Exact Differential Equations. C. The Generation of Additional Thermodynamic Potentials as Legendre Transformations.