The phases present in a sample of CO 2 which is heated steadily from 100 K at constant pressure of 1 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.

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Chapter 4, Problem 4A.1P

(a)

Interpretation Introduction

Interpretation: The phases present in a sample of CO2 which is heated steadily from 100 K at constant pressure of 1 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.

(b)

Interpretation Introduction

Interpretation: The phases present as a sample of CO2 is heated steadily from 100 K at constant pressure of 70 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.

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