The vapor pressure of pure water at 60 °C is 149 torr. Thevapor pressure of water over a solution at 60 °C containingequal numbers of moles of water and ethylene glycol (anonvolatile solute) is 67 torr. Is the solution ideal accordingto Raoult’s law?

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter13: The Chemistry Of Solutes And Solutions
Section: Chapter Questions
Problem 68QRT
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The vapor pressure of pure water at 60 °C is 149 torr. The
vapor pressure of water over a solution at 60 °C containing
equal numbers of moles of water and ethylene glycol (a
nonvolatile solute) is 67 torr. Is the solution ideal according
to Raoult’s law?

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