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Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter10: Properties Of Solutions
Section: Chapter Questions
Problem 7RQ
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Analyze the figure below and describe what happens to the colligative properties when solute is added to the solution.
C. Vapor Pressure Lowering
In the picture on the left, the surface is entirely occupied by liquid molecules, some of which will
avaporate and form a vapor pressure. On the right, a non-volatile solute has been dissolved into the solvent.
Nan-volatile means that the solute itself has little tendency to evaporate. Because some of the surface is now
OCGupied by solute particles, there is less room for solvent molecules. This results in less solvent being able
to evaporate.
Pule weler
zolutior.
Fre eing pois
I oiting peue
n'-
1:1
Teaya(
Figure 6. The surface of a pure solvent
compared to a solution (a non-volatile solute).
Figure 7. The vapor pressure of pure water is shown as a solid
line: the vapor pressure of an agyeous solution is shown as a
dashed line. Note the differences between the solution and the
pure substance in melting point and boiling point.
Answer:
Transcribed Image Text:C. Vapor Pressure Lowering In the picture on the left, the surface is entirely occupied by liquid molecules, some of which will avaporate and form a vapor pressure. On the right, a non-volatile solute has been dissolved into the solvent. Nan-volatile means that the solute itself has little tendency to evaporate. Because some of the surface is now OCGupied by solute particles, there is less room for solvent molecules. This results in less solvent being able to evaporate. Pule weler zolutior. Fre eing pois I oiting peue n'- 1:1 Teaya( Figure 6. The surface of a pure solvent compared to a solution (a non-volatile solute). Figure 7. The vapor pressure of pure water is shown as a solid line: the vapor pressure of an agyeous solution is shown as a dashed line. Note the differences between the solution and the pure substance in melting point and boiling point. Answer:
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