Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 11 - Section 11.8 - Phase Diagrams - Conceptual Connection - Page 520: 11.7

Answer

The substance sublimes from solid to gas.

Work Step by Step

The pressure at which the substance is being warmed (220 mmHg) is less than the pressure at its triple point (225 mmHg). This means that the liquid state will not be stable. Hence, the substance directly sublimes from solid to gaseous state.
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