Chapter 13.4, Problem 26LC

Interpretation Introduction

Interpretation:

The significance of curved lines in a phase diagram is to be explained.

Concept Introduction :

A phase diagram is a graphical representation of a substance's physical state under various pressures and temperatures.

Answer to Problem 26LC

The curved lines show the pressure and temperature ranges when two phases are in equilibrium with one another.

Explanation of Solution

The differences between the different physical states of matter of elements or compounds as they relate to pressure and temperature are depicted in phase diagrams. Pressure (usually measured in atmospheres) and temperature are plotted on phase diagrams (typically in degrees Celsius or Kelvin). The stable states of an equilibrium system are represented by the labels on the graph. The curved lines show the ranges of pressures and temperatures where two phases can coexist peacefully. In other words, these lines indicate the locations of phase changes.