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chapter2_testbank - Chapter 2 Water Chapter 2 Water Page 51...

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12 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: 5. Weak interactions in aqueous systems Chapter 2 Water 13 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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