1) Consider the three compounds: pentane (C5H12), water (H2O), and hexane (C6H14). Which of the options below describes their miscibility?   a. Water and hexane are miscible with each other, but neither are miscible with pentane. b. All three compounds are miscible. c. None of the compounds are miscible with any other compounds given. d. Water and pentane are miscible with each other, but neither are miscible with hexane. e. Hexane and pentane are miscible with each other, but neither are miscible with water.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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1) Consider the three compounds: pentane (C5H12), water (H2O), and hexane (C6H14).

Which of the options below describes their miscibility?

 

a. Water and hexane are miscible with each other, but neither are miscible with pentane.
b. All three compounds are miscible.
c. None of the compounds are miscible with any other compounds given.
d. Water and pentane are miscible with each other, but neither are miscible with hexane.
e. Hexane and pentane are miscible with each other, but neither are miscible with water.
 
2)

Which of the following lists correctly ranks the species in order of decreasing strength of intermolecular forces in a pure sample?

 

a. CH3CH2CH2CH2CH3 > CH3CH2CH2CH3 > CH3CH2CH3
b. CH3CH2CH2CH3 > CH3CH2CH2CH2CH3 > CH3CH2CH3
c. CH3CH2CH3 > CH3CH2CH2CH3 > CH3CH2CH2CH2CH3
d. CH3CH2CH3 > CH3CH2CH2CH2CH3 > CH3CH2CH2CH3
e. CH3CH2CH2CH2CH3 > CH3CH2CH3 > CH3CH2CH2CH3
 
3)
What intermolecular forces exist between molecules in a pure sample of selenium tetrafluoride which has the molecular formula SeF4?

 

a. Hydrogen bonding only.
b. Dipole-Dipole forces only.
c. Dispersion forces only
d. Dispersion forces, dipole-dipole forces and hydrogen bonding.
e. Dispersion forces and dipole-dipole forces only
 
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