Chapter 11, Problem 11.17CP

Interpretation Introduction

(a)

Interpretation:

The position of solid, liquid and vapor in phase diagram should be determined.

Concept introduction:

Phase diagram is a graph that represents the solid phase, liquid phase, and gaseous phase of one substance or mixture of substance under different states of temperature and pressure.

The temperature and pressure on a phase diagram at which gas, liquid, and solid phases coexist is called triple point. The temperature and pressure in the phase diagram at which substance is lies between liquid-gas phases is called critical point. The temperature and pressure at which liquid or gas is neither a true liquid nor a true gas is called supercritical point.

Interpretation Introduction

(b)

Interpretation:

The number of triple point of carbon should be determined. Also, the triple point in phase diagram should be circled.

Concept introduction:

Phase diagram is a graph that represents the solid phase, liquid phase, and gaseous phase of one substance or mixture of substance under different states of temperature and pressure.

The temperature and pressure in the phase diagram at which substance is lies between liquid-gas phases is called critical point. The temperature and pressure at which liquid or gas is neither a true liquid nor a true gas is called supercritical point.

Interpretation Introduction

(c)

Interpretation:

The graphite phase on the diagram should be identified.

Concept introduction:

Phase diagram is a graph that represents the solid phase, liquid phase, and gaseous phase of one substance or mixture of substance under different states of temperature and pressure.

The temperature and pressure in the phase diagram at which substance is lies between liquid-gas phases is called critical point. The temperature and pressure at which liquid or gas is neither a true liquid nor a true gas is called supercritical point.

d)

Interpretation Introduction

Interpretation:

The diamond phase on the diagram is to be identified.

Concept introduction:

Phase diagram is a graph that represents the solid phase, liquid phase, and gaseous phase of one substance or mixture of substance under different states of temperature and pressure.

The temperature and pressure in the phase diagram at which substance is lies between liquid-gas phases is called critical point. The temperature and pressure at which liquid or gas is neither a true liquid nor a true gas is called supercritical point.

Interpretation Introduction

(e)

Interpretation:

Whether the graphite or diamond phase that is more denser should be determined.

Concept introduction:

Phase diagram is a graph that represents the solid phase, liquid phase, and gaseous phase of one substance or mixture of substance under different states of temperature and pressure.

The temperature and pressure in the phase diagram at which substance is lies between liquid-gas phases is called critical point. The temperature and pressure at which liquid or gas is neither a true liquid nor a true gas is called supercritical point.

The density of phase is determined by temperature and pressure of the phase in the phase diagram. The phase that lies in high pressure and low temperature range is more dense.