Chapter 9, Problem 104E

Interpretation Introduction

Interpretation: The following statements to be explained by using given phase diagram of Sulphur.

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.

Normal melting point: Normal melting point of the solids defined as the temperature at which solid melts at 1 atmospheric pressure. Normal melting point is differing from melting point in which pressure would be defined.

Normal boiling point: Normal boiling point of the liquid is defined as the temperature at which liquid boils at 1 atmospheric pressure. Normal boiling point is differing from boiling point in which pressure would be defined.