Chemistry: Atoms First
18th Edition
ISBN: 9781938168154
Author: Richard Langley, Klaus Theopold, Paul Flowers
Publisher: OpenStax College
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Textbook Question
Chapter 10, Problem 24E
The surface tension and viscosity values for diethyl ether, acetone, ethanol, and ethylene glycol are shown here.
(a) Explain their differences in viscosity in items of the size and shape of their molecules and their IMFs.
(b) Explain their differences in surface tension in items of the size and shape of their molecules and their IMFs:
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The surface tension and viscosity values for diethyl ether, acetone, ethanol, and ethylene glycol are shown here. (a) Explain their differences in viscosity in terms of the size and shape of their molecules and their IMFs. (b) Explain their differences in surface tension in terms of the size and shape of their molecules and their IMFs:
(a)
Explain their differences in viscosity in terms of the size and shape of their molecules and their IMFs.
The (weaker)(stronger) the intermolecular forces, the higher the viscosity. Ethylene glycol and ethanol both exhibit hydrogen bonding, but since ethylene glycol contains (more)(fewer) opportunities for hydrogen bonding than ethanol, its viscosity is higher. Acetone has a lower viscosity than ethanol since its dipole-dipole force is (weaker)(stronger) than hydrogen bonding. Diethyl ether has a lower viscosity than acetone since it is (more)(less) polar than acetone.
(b)
Explain their differences in surface tension in terms of the size and shape of their molecules and their IMFs.
The (weaker)(stronger) the intermolecular forces, the higher the surface tension. Ethylene glycol and ethanol both exhibit hydrogen bonding, but since ethylene glycol contains (more)(less) opportunities for hydrogen bonding than ethanol, its surface tension is higher. The surface tension of ethanol…
(a) How do the viscosity and surface tension of liquids change as intermolecular forces become stronger? (b) How do the viscosity and surface tension of liquids change as temperature increases? Accounts for these trends
Chapter 10 Solutions
Chemistry: Atoms First
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