Chapter 11.7, Problem 1CP

Interpretation Introduction

Interpretation:

The phase diagram representing the sublimation of a substance, when it is heated at $1\text{ atm}$, is to be identified.

Concept introduction:

A phase diagram is a graph that represents the solid, liquid, and gaseous phases of a substance at different pressures and temperatures. The lines are the boundaries between two phases and represent the conditions under which the two phases are at equilibrium.

Sublimation is the transition of a substance directly from solid to gas phase, without passing through the intermediate liquid phase. It is an endothermic process that occurs at temperature and pressure below a substance’s triple point in its phase diagram, which corresponds to the lowest pressure at which the substance can exist as a liquid.