The Theoretical: The mass action law, thermodynamic functions, solutions. Experimental Methods: Calorimetric Methods, electromotive forces, equilibria with a gaseous phase, static and dynamic methods for the measurement of vapour pressure, gascondensed phase equilibrium in a closed system. The Estimation of Thermochemical Data: Heat capacities, enthalpies and entropies of transformation, fusion and evaporation and entropy changes, enthalpies of formation. Examples of Thermochemical Treatment of Materials Problems. Thermochemical data. The tabulation of data, tables, references extensively revised and up-dated, the 6th edition of this classic work includes all the latest developments in experimental methods, new methods for estimating thermochemical data for both pure and alloy substances, new practical applications of thermochemical calculations. Update tables of critically evalued thermochemical data for inorganic substances and binary alloys systems. The basic principles of chemical thermodynamics are presented in a straightforward way with many examples of the use of thermochemical calculations in solving a variety of materials problems. Although thermodynamics is an established field, this 6th Edition presents the most recent materials and environmental considerations (e. g. Environmental pollution). This text is suitable for graduates and undergraduates alike and provides basic information to apply thermochemical principles and data to the optimization of materials and materials processes.