Among the given phase diagrams, the one which corresponds to sublimation at 1 atm without melting, has to be identified. Concept Introduction: Phase diagram: In any phase diagram, the thick lines indicate the equilibrium existing between two phases. In the given phase diagrams, the very 1 st phase from the top is the solid phase and the next adjacent phase is the liquid phase. The phase below the liquid phase is the gaseous phase which will be the bottom portion of the entire phase diagram. Melting is the process in which the solid phase and the liquid phase exists in equilibrium. It means the solid phase changes into the liquid phase. Sublimation is the process in which the solid phase and the vapor phase exists in equilibrium. It means the solid phase changes into vapor phase directly without changing into the intermediate liquid phase.

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Chapter 12.7, Problem 1RC

Interpretation Introduction

Interpretation:

Among the given phase diagrams, the one which corresponds to sublimation at 1 atm without melting, has to be identified.

Concept Introduction:

Phase diagram: In any phase diagram, the thick lines indicate the equilibrium existing between two phases. In the given phase diagrams, the very 1^st phase from the top is the solid phase and the next adjacent phase is the liquid phase. The phase below the liquid phase is the gaseous phase which will be the bottom portion of the entire phase diagram.

Melting is the process in which the solid phase and the liquid phase exists in equilibrium. It means the solid phase changes into the liquid phase.

Sublimation is the process in which the solid phase and the vapor phase exists in equilibrium. It means the solid phase changes into vapor phase directly without changing into the intermediate liquid phase.

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