版权所有：华东理工大学物理化学教研室 上一页 下一页 返回目录 Part 1: Equilibrium 8. Phase diagrams
版权所有：华东理工大学物理化学教研室 上一页 下一页 返回目录 Part 1: Equilibrium 8. Phase diagrams
版权所有：华东理工大学物理化学教研室 2 In Chapter 6, we discussed the phase diagrams for pure substances. We shall develop their use systematically and show how they are rich summaries of empirical information about a wide range of systems. To set the stage, we introduce the famous phase rule of Gibbs, which shows the extent to which various parameters can be varied yet the equilibrium between phases preserved. With the rule established, we see how it can be used to discuss the phase diagrams that we met in the two preceding chapters. 8. Phase diagrams
版权所有：华东理工大学物理化学教研室 2 In Chapter 6, we discussed the phase diagrams for pure substances. We shall develop their use systematically and show how they are rich summaries of empirical information about a wide range of systems. To set the stage, we introduce the famous phase rule of Gibbs, which shows the extent to which various parameters can be varied yet the equilibrium between phases preserved. With the rule established, we see how it can be used to discuss the phase diagrams that we met in the two preceding chapters. 8. Phase diagrams
版权所有：华东理工大学物理化学教研室 3 Phases, components, and degrees of freedom 8.1 Definitions 8.2 The phase rule Two-component systems 8.3 Vapour pressure diagrams 8.4 Temperature-composition diagrams 8.5 Liquid-liquid phase diagrams 8.6 Liquid-solid phase diagrams 8.7 Ultrapurity and controlled impurity 8. Phase diagrams
版权所有：华东理工大学物理化学教研室 3 Phases, components, and degrees of freedom 8.1 Definitions 8.2 The phase rule Two-component systems 8.3 Vapour pressure diagrams 8.4 Temperature-composition diagrams 8.5 Liquid-liquid phase diagrams 8.6 Liquid-solid phase diagrams 8.7 Ultrapurity and controlled impurity 8. Phase diagrams
版权所有：华东理工大学物理化学教研室 4 8.1 Definitions 1). The phase A phase of a substance is a form of matter that is uniform throughout in chemical composition and physical state. (b) a dispersion, in which regions of one component are embedded in a matrix of a second component. (a) a single-phase solution, in which the composition is uniform on a microscopic scale
版权所有：华东理工大学物理化学教研室 4 8.1 Definitions 1). The phase A phase of a substance is a form of matter that is uniform throughout in chemical composition and physical state. (b) a dispersion, in which regions of one component are embedded in a matrix of a second component. (a) a single-phase solution, in which the composition is uniform on a microscopic scale
版权所有：华东理工大学物理化学教研室 5 8.1 Definitions 1). The phase The number of phases in a system is denoted P. Ice is a single phase even though it might be chipped into small fragments. A crystal is a single phase. Two totally miscible liquids form a single phase. A gas, or a gaseous mixture, is a single phase. P = 1 Any sample cut from the sample, however small, is representative of the composition of the whole
版权所有：华东理工大学物理化学教研室 5 8.1 Definitions 1). The phase The number of phases in a system is denoted P. Ice is a single phase even though it might be chipped into small fragments. A crystal is a single phase. Two totally miscible liquids form a single phase. A gas, or a gaseous mixture, is a single phase. P = 1 Any sample cut from the sample, however small, is representative of the composition of the whole