Chapter 22, Problem 42E

(a)

Interpretation Introduction

To explain: The effect on the phase of ${\text{CO}}_{\text{2}}$ when the temperature is reduced from critical point.

(b)

Interpretation Introduction

To explain: The effect on the phase of ${\text{CO}}_{\text{2}}$ when the pressure is increased on gaseous ${\text{CO}}_{\text{2}}$ held at a temperature of $-50°\text{C}$.

(c)

Interpretation Introduction

To explain: The effect on the phase of ${\text{CO}}_{\text{2}}$ when the temperature is increased on solid ${\text{CO}}_{\text{2}}$ held at a pressure of $20\text{ atm}$.