Chapter 2
Water
Chapter 2
Water
Multiple Choice Questions
1.
Weak interactions in aqueous systems
Page: 43–45
Difficulty: 2
Ans: D
Which of these statements about hydrogen bonds is
not
true?
A)
Hydrogen bonds account for the anomalously high boiling point of water.
B)
In liquid water, the average water molecule forms hydrogen bonds with three to four other water
molecules.
C)
Individual hydrogen bonds are much weaker than covalent bonds.
D)
Individual hydrogen bonds in liquid water exist for many seconds and sometimes for minutes.
E)
The strength of a hydrogen bond depends on the linearity of the three atoms involved in the
bond.
2.
Weak interactions in aqueous systems
Page: 48
Difficulty: 2
A true statement about hydrophobic interactions is that they:
3.
Weak interactions in aqueous systems
Page: 48–49
Difficulty: 2
Hydrophobic interactions make important energetic contributions to:
4.
Weak interactions in aqueous systems
Page: 51
Difficulty: 2
Dissolved solutes alter some physical (colligative) properties of the solvent water because they
change the:
12
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5.
Weak interactions in aqueous systems
Page: 51
Difficulty: 2
Ans: E
Osmosis is movement of a:
A)
charged solute molecule (ion) across a membrane.
B)
gas molecule across a membrane.
C)
nonpolar solute molecule across a membrane.
D)
polar solute molecule across a membrane.
E)
water molecule across a membrane.
6.
Ionization of water, weak acids, and weak bases
Page: 54
Difficulty: 2
A hydronium ion:
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- Spring '11
- PCK
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