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Which of the following statements concerning phase changes is FALSE? a. Enthalpy of vaporization is greater in magnitude than the enthalpy of melting for all substances. b. Some solids have sufficiently high vapor pressures at room temperature that they can directly sublime from solid to vapor without passing through the liquid phase. c. At the boiling point, the liquid phase coexists in equilibrium with its vapor phase as long as the temperature is held constant and the system is kept closed. d. At the critical temperature, a solid can coexist with its liquid and vapor phase as long as the critical pressure is high enough.

Which of the following statements concerning phase changes is FALSE? a. Enthalpy of vaporization is greater in magnitude than the enthalpy of melting for all substances. b. Some solids have sufficiently high vapor pressures at room temperature that they can directly sublime from solid to vapor without passing through the liquid phase. c. At the boiling point, the liquid phase coexists in equilibrium with its vapor phase as long as the temperature is held constant and the system is kept closed. d. At the critical temperature, a solid can coexist with its liquid and vapor phase as long as the critical pressure is high enough.

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter9: Liquids, Solids, And Materials
Section: Chapter Questions
Problem 105QRT
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Which of the following statements concerning phase changes is FALSE?

a. Enthalpy of vaporization is greater in magnitude than the enthalpy of melting for all substances.

b. Some solids have sufficiently high vapor pressures at room temperature that they can directly sublime from solid to vapor without passing through the liquid phase.

c. At the boiling point, the liquid phase coexists in equilibrium with its vapor phase as long as the temperature is held constant and the system is kept closed.

d. At the critical temperature, a solid can coexist with its liquid and vapor phase as long as the critical pressure is high enough.



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