(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 and acetone are roughly the same even though acetone does not exhibit hydrogen bonding. The acetone molecules are able to orient themselves in a (planar),(nonplanar) manner to create a tight surface to match the hydrogen bonding of ethanol. Diethyl ether has a lower surface tension since it is (planar),(nonplanar) and is(more)(less) polar than acetone. The surface tension and viscosity values for diethyl ether, acetone, ethanol, and ethylene glycol at 20°C are shown here.Surface TensionViscosity(mPa s)CompoundMolecule(mN/m)diethyl etherC2H50C2H516.70.22acetone23.00.31CH3COCH 3ethanol22.31.07C2H50Hethylene glycolCH2(OH)CH2(OH)48.416.1(a) Explain their differences in viscosity in terms of the size and shape of their molecules and their IMFS.The ---Select--- +) the intermolecular forces, the higher the viscosity. Ethylene glycol and ethanol both exhibit hydrogen bonding, but since ethylene glycol containssince its dipole-dipole force is (---Select----Select---opportunities for hydrogen bonding than ethanol, its viscosity is higher. Acetone has a lower viscosity than ethanolthan hydrogen bonding. Diethyl ether has a lower viscosity than acetone since it is (---Select--- ) polar than acetone.(b) Explain their differences in surface tension in terms of the size and shape of their molecules and their IMFS.---Select--- + opportunities for hydrogen bonding than ethanol, its surface tension is higher. The surface tension of ethanol--Select--- + manner to create a tight surface to match the hydrogen bonding of ethanol. Diethyl ether has a lower surface tension since it isThe ---Select---the intermolecular forces, the higher the surface tension. Ethylene glycol and ethanol both exhibit hydrogen bonding, but since ethylene glycol containsand acetone are roughly the same even though acetone does not exhibit hydrogen bonding. The acetone molecules are able to orient themselves in a....... ...........---Select---and is ---Select--- polar than acetone.

Intermolecular forces are the forces that occur between different constituents. These include…

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 and acetone are roughly the same even though acetone does not exhibit hydrogen bonding. The acetone molecules are able to orient themselves in a (planar),(nonplanar) manner to create a tight surface to match the hydrogen bonding of ethanol. Diethyl ether has a lower surface tension since it is (planar),(nonplanar) and is(more)(less) polar than acetone.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

(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 and acetone are roughly the same even though acetone does not exhibit hydrogen bonding. The acetone molecules are able to orient themselves in a (planar),(nonplanar) manner to create a tight surface to match the hydrogen bonding of ethanol. Diethyl ether has a lower surface tension since it is (planar),(nonplanar) and is(more)(less) polar than acetone.

The surface tension and viscosity values for diethyl ether, acetone, ethanol, and ethylene glycol at 20°C are shown here.
Surface Tension
Viscosity
(mPa s)
Compound
Molecule
(mN/m)
diethyl ether
C2H50C2H5
16.7
0.22
acetone
23.0
0.31
CH3COCH 3
ethanol
22.3
1.07
C2H50H
ethylene glycol
CH2(OH)CH2(OH)
48.4
16.1
(a) Explain their differences in viscosity in terms of the size and shape of their molecules and their IMFS.
The ---Select--- +) the intermolecular forces, the higher the viscosity. Ethylene glycol and ethanol both exhibit hydrogen bonding, but since ethylene glycol contains
since its dipole-dipole force is (---Select---
-Select---
opportunities for hydrogen bonding than ethanol, its viscosity is higher. Acetone has a lower viscosity than ethanol
than hydrogen bonding. Diethyl ether has a lower viscosity than acetone since it is (---Select--- ) polar than acetone.
(b) Explain their differences in surface tension in terms of the size and shape of their molecules and their IMFS.
---Select--- + opportunities for hydrogen bonding than ethanol, its surface tension is higher. The surface tension of ethanol
--Select--- + manner to create a tight surface to match the hydrogen bonding of ethanol. Diethyl ether has a lower surface tension since it is
The ---Select---
the intermolecular forces, the higher the surface tension. Ethylene glycol and ethanol both exhibit hydrogen bonding, but since ethylene glycol contains
and acetone are roughly the same even though acetone does not exhibit hydrogen bonding. The acetone molecules are able to orient themselves in a
....... ...........
---Select---
and is ---Select--- polar than acetone.

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