Physical chemistry is a branch or a component part of chemistry. By employing the theories and experimental methods of the basic sciences of physics and mathematics, the task of the physical chemistry lies in studying the principles of equilibrium and rates in chemical reactions including phase and pVT changes, and the relations between those principles and the microscopic structures of substances. It serves as the theoretical basis of the whole chemistry science.
Physical chemistry(I) contains 5 chapters, concerning the theoretical methods on the macroscopic level for studying the principles of equilibrium. Chapter 1 and 2 , The First Law of Thermodynamics, The Second Law of Thermodynamics and the part of Thermodynamics of Multi-component Systems in Chapter 3 elucidate the general equilibrium principles on the macroscopic level. Chapter 4, Chemical Equilibrium and Chapter 5, Phase Equilibrium, including phase diagrams and calculations are two main applications.
