Chapter 4, Problem 4A.5AE

(i)

Interpretation Introduction

Interpretation: The phases of ${\text{CO}}_{\text{2}}$ present at $\text{200}\text{K}$ and $2.5\text{atm}$ have to be described.

Concept introduction: The physical state of a substance under different conditions of temperature and pressure is represented by a phase diagram which is drawn by taking pressure on the y axis and temperature on the x axis.  One component system is a system involving one pure substance in different phases.  The system is defined by a set of variables and the minimum number of variable used to define the system is called its degree of freedom.

(ii)

Interpretation Introduction

Interpretation: The phases of ${\text{CO}}_{\text{2}}$ present at $\text{300}\text{K}$ and $4.0\text{atm}$ have to be described.

Concept introduction: The physical state of a substance under different conditions of temperature and pressure is represented by a phase diagram which is drawn by taking pressure on the y axis and temperature on the x axis.  One component system is a system involving one pure substance in different phases.  The system is defined by a set of variables and the minimum number of variable used to define the system is called its degree of freedom.

(iii)

Interpretation Introduction

Interpretation: The phases of ${\text{CO}}_{\text{2}}$ present at $\text{310}\text{K}$ and $50\text{atm}$ have to be described.

Concept introduction: The physical state of a substance under different conditions of temperature and pressure is represented by a phase diagram which is drawn by taking pressure on the y axis and temperature on the x axis.  One component system is a system involving one pure substance in different phases.  The system is defined by a set of variables and the minimum number of variable used to define the system is called its degree of freedom.