Chapter 19, Problem 13STP

Interpretation Introduction

Interpretation:

Whether carbon dioxide is denser in its solid or liquid state needs to be explained.

Concept introduction:

Phase diagram shows the conversion of one state of matter to another and condition of temperature and pressure at which the conversion takes place.

Answer to Problem 13STP

Carbon dioxide is denser in solid state than liquid state.

Explanation of Solution

The phase diagram is represented as follows:

The phase diagram shows that solid- liquid equilibrium curve has positive slope. This implies that solid CO₂ is denser than its liquid form.