Phase Equilibria in Chemical Engineering covers the practical aspects and the thermodynamic basis of equilibria between gases, liquids, and solids. The importance of, and and interest in these topics over decades has resulted in the development of many different correlations and methods of comparable worth. The author draws upon his many years of experience in evaluating and comparing these alternatives. Professor Walas details the historical background, but focuses on current knowledge for the evaluation of equilibria between gaseous, liquid, and solid phases, and on the chemical engineering processes that involve such phenomena. Knowledge of the amounts and composition of phases that result when processes of transformation stabilize is essential for proper equipment design. To this end, emphasis is placed on finding the numerical results necessary for the design of equipment handling several phases, or the interpretation of such equipment's performance. Therefore, most important points are illustrated through solved numerical examples, as well as problems designed for solution by the reader. And, in addition to numerous computer programs written in BASIC, there are over 800 references to literature, which facilitate pursuit of any topic in further detail. Covers the practical aspects and thermodynamic equilibria between the phases.Compares the different correlations and methods in the field today.Contains numerous examples, illustrations, and references.