The manual is devoted to one of the sections of physical chemistry - issues of heterogeneous phase equilibrium. The conceptual apparatus, basic rules and patterns of phase equilibrium are considered, phase equilibrium diagrams in one-, two- and three-component systems are presented and analyzed. Practical work is proposed to consolidate theoretical material.

Intended for 3rd year students of the Faculty of Chemistry of ISU when performing a practical work in physical chemistry.

ContentsUse the arrow to or collapse this sectionPhase equilibriaBasic concepts and definitions. Gibbs phase rule (phase equilibrium law). Phase equilibrium in one-component systems. Polymorphism. Physico-chemical analysis, its basic principles. Methods for depicting systems. Thermal method of analysis. Main types of fusibility diagrams of two-component systems. State diagram of a system with a simple eutectic. Diagrams state of the system with the formation of chemical compounds. State diagrams of systems with the formation of unlimited solid solutions. State diagrams of two-component systems with limited solubility of components. State diagrams of a system with limited solubility of components in the solid state with eutectic. State diagram of a system with limited solubility of components with peritectics. Three-component systems Methods composition images. Fusibility diagrams of three-component systems. Mutual solubility of three liquids. Distribution of a substance between two immiscible solvents. Laboratory work Study of a two-component system with a simple eutectic. Study of a two-component system with limited mutual solubility of components in the liquid state. Study of the mutual solubility of three liquids. Construction of a fusibility diagram of a three-component systems. The study of the distribution of a substance between two immiscible liquids.