2018 Physical Chemistry II (Chemical Equilibrium) B

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Academic unit or major
Undergraduate major in Chemical Science and Engineering
Taniguchi Izumi 
Class Format
Media-enhanced courses
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Syllabus updated
Lecture notes updated
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Course description and aims

First we explain the physical transformation of a pure substance and equilibrium relations by introducing chemical potential, and then, the derivation of the phase boundary line of gas-liquid, liquid-solid, and gas-solid systems. Moreover, we give a description of the thermodynamic properties of simple mixtures in gas or liquid systems using chemical potential. We finally explain the phase rule of Gibbs which is the most important law of phase equilibrium in chemistry, and the interpretation of the phase diagram for the steam-liquid, liquid-liquid or liquid-liquid-solid coexisting systems using the phase rule.
Understanding of thermodynamic equilibrium and phase diagrams

Student learning outcomes

By the end of this course, students will be able to understand:
1) Physical transformations and phase diagrams of pure substances
2) Thermodynamic description of mixtures
3) Thermodynamics of mixing
4) Chemical potential and activities
5) Colligative properties
6) The phase rule and phase diagrams of simple mixtures


Phase stability, Phase boundary, Partial molar quantities, Thermodynamics of mixing, Chemical potential, Colligative properties, Activity, Phase rule, Phase diagram

Competencies that will be developed

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

At the beginning or the end of each class, solutions to exercise problems that were assigned during the previous or present class are reviewed. To prepare for class, students should read the course schedule section and check what topics will be covered. Required learning should be completed outside of the classroom for preparation and review purposes.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Physical transformations of pure substances and equilibrium in chemistry Understanding of the phase diagram indicating the physical transformation of a pure substance
Class 2 Physical transformations of pure substances and thermodynamic criterion of equilibrium Understanding of the thermodynamic meaning of the phase stability and phase transitions, and derivation of the phase boundary equations
Class 3 Thermodynamic description of simple mixtures Understanding of partial molar quantity and the thermodynamic function in the mixture of the perfect gas
Class 4 Chemical potential of liquids and thermodynamics of mixing Understanding of the chemical potential of liquid and thermodynamic function in the liquid mixtures
Class 5 Liquid mixtures and colligative properties Understanding of colligative properties
Class 6 Solvent and solute activities Understanding of solvent and solute activities
Class 7 Phase rule, vapour pressure and temperature–composition diagrams Understanding of the phase rule, vapour pressure and temperature–composition diagrams
Class 8 Liquid-liquid and liquid-solid phase diagrams Understanding of liquid-liquid and liquid-solid phase diagrams


Peter Atkins & Julio de Paula, Physical Chemistry, Tenth edition, Oxford, ISBN: 978-0199697403

Reference books, course materials, etc.

We distribute a document at the start of lecture as needed and give a commentary using PowerPoint. The PowerPoint file to be used for lecture is made available beforehand through OCW

Assessment criteria and methods

We evaluate students' comprehension by the results of practice exercises in classes and the final exam.

Related courses

  • CAP.B216 : Physical Chemistry I (Thermodynamics)
  • CAP.B218 : Physical Chemistry III (Kinetics)
  • CAP.C204 : Chemical Engineering Thermodynamics
  • LAS.C107 : Basic Chemical Thermodynamics

Prerequisites (i.e., required knowledge, skills, courses, etc.)

Students must have successfully completed both Basic Chemical Thermodynamics I (LAS.C107) and Physical chemistry I (CAB.B216) or have equivalent knowledge.


Classes A and B are for the students with an odd and even student ID numbers, respectively.

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