Chapter 9, Problem 105E

Interpretation Introduction

Interpretation

1. a) Number of triple point in the phase diagram.
2. b) The phases coincide in that triple point.
3. c) What happen when graphite is subjected to very much high pressure at $\text{25°C}\text{.}$
4. d) Either graphite or diamonds are denser to be discussed.

Concept Introduction

Phase diagram: Under different temperature and pressure, physical states of the substance that are represented in graph are known as phase diagram. The temperature represents in X-axis and pressure in Y-axis.

Triple point: For given substance, three phases (solid, liquid and gas) are coexisting in thermodynamic equilibrium at particular temperature and pressure.

Critical point: In a phase diagram, a point at which both liquid and gaseous state of the substance having indistinguishable density.

To explain number of triple points in phase diagram.