Chapter 9, Problem 23QAP

A pure substance X has the following properties: $\text{Mp}=\text{9}0°\text{C}$, increasing slightly as pressure increases; normal $\text{bp}=\text{12}0°\text{C}$; liquid $\text{vp}=\text{65 mm}$ Hg at 100°C, 20 mm Hg at the triple point.

(a) Draw a phase diagram for X.

(b) Label solid, liquid, and vapor regions of the diagram.

(c) What changes occur if, at a constant pressure of 100 mm Hg, the temperature is raised from 100°C to 150°C?