版权所有：华东理工大学物理化学教研室 2 The chapter begins by developing the concept of chemical potential to show that it is a particular of a class of partial molar quantities. Then it explores how the chemical potential of a substance is used to describe the physical properties of mixture. The underlying principle is that at equilibrium the chemical potential of a species is the same in every phase. 7. Simple mixtures版权所有：华东理工大学物理化学教研室 2 The chapter begins by developing the concept of chemical potential to show that it is a particular of a class of partial molar quantities. Then it explores how the chemical potential of a substance is used to describe the physical properties of mixture. The underlying principle is that at equilibrium the chemical potential of a species is the same in every phase. 7. Simple mixtures