Chapter 12, Problem 12.67QP

Interpretation Introduction

Interpretation:

The phase changes that occur in following process have to be explained –

“Freeze dried coffee is prepared by freezing brewed coffee and removing the ice component with a vacuum pump.”

Concept Introduction:

• A phase change means the change in the physical state of substance – from one physical state to another physical state.
• The possible phase changes occur among vapor, solid and liquid phases of a substance are – melting, freezing, evaporation (or vaporization), condensation, deposition and sublimation.