Phase diagram of oxygen has to be sketched and whether it can be melted on application of pressure like water has to be explained. Concept Introduction: A plot of pressure against temperature that displays the stable range of a particular phase is known as phase diagram. The phase diagram has three regions. Each region represents a particular stable phase like solid, liquid, or gas separated by boundary lines. Boundaries represent the equilibrium between two phases. The points of intersection at which the three boundary lines intersect is known as triple point. All three phases exist in equilibrium at triple point. The vapor pressure at equilibrium for liquid increases as the temperature goes up to critical point where the abruptly vapor pressure curve terminates. The gas and the liquid phases become indistinguishable above critical temperature.

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Chapter 15, Problem 15.33P

Interpretation Introduction

Interpretation:

Phase diagram of oxygen has to be sketched and whether it can be melted on application of pressure like water has to be explained.

Concept Introduction:

A plot of pressure against temperature that displays the stable range of a particular phase is known as phase diagram.

The phase diagram has three regions. Each region represents a particular stable phase like solid, liquid, or gas separated by boundary lines.

Boundaries represent the equilibrium between two phases. The points of intersection at which the three boundary lines intersect is known as triple point. All three phases exist in equilibrium at triple point.

The vapor pressure at equilibrium for liquid increases as the temperature goes up to critical point where the abruptly vapor pressure curve terminates. The gas and the liquid phases become indistinguishable above critical temperature.

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