The Thermodynamics of Liquid-Pair Equilibrium, written by author A. G. Morachevsky and his colleagues, is a deep and comprehensive study of one of the most important aspects of thermodynamics the interaction between liquids and their vapors. This publication will be especially interesting for those who study physics, chemistry, as well as engineers and specialists in the field of materials science and energy. The book discusses key concepts related to thermodynamic processes occurring in systems where liquid and vapor coexist. The authors carefully explain how these processes affect the properties of substances, their behavior at different temperatures and pressures, and the mechanisms of phase transitions. The reader will be able to learn about thermodynamic potentials, state equations, and various models that help predict the behavior of systems in equilibrium. The book is not only saturated with theoretical calculations, but also contains practical examples, which makes it especially useful for students and graduate students, as well as for professionals working in scientific and research institutions. The authors pay attention to both the classical aspects of thermodynamics and modern achievements in this area, which allows the reader to get a complete idea of the subject. The topics raised in the book cover a wide range of issues, from the fundamentals of thermodynamics to complex models describing the behavior of multicomponent systems. This makes it relevant to a variety of scientific disciplines, including physical chemistry, engineering sciences, and even environmental studies. The book also highlights the importance of thermodynamics in modern technologies such as energy production, the development of new materials, and even in biological systems. The author's style is distinguished by clarity and logical presentation, which makes it easy to assimilate even the most complex concepts. A. G. Morachevsky is a well-known scientist in the field of thermodynamics, and his work has already received recognition in the scientific community. Among his other well-known works are Thermodynamics and Kinetics of Chemical Processes, which has also become a reference book for many students and professionals. This book will be interesting not only for students and graduate students, but also for teachers, researchers and practicing engineers working in the field of thermodynamics and related disciplines. If you are looking for an in-depth understanding of the thermodynamic processes occurring in liquid-vapor systems, then the “liquid-vapor equilibrium thermodynamics” will become an indispensable source of knowledge for you. Thus, this edition is not just a textbook, but a real encyclopedia of thermodynamics, which will help the reader to understand the complex issues associated with phase transitions and equilibrium. The book will be an excellent addition to the library of anyone interested in physics, chemistry and engineering, and will help expand the horizons of knowledge in this fascinating and important field.