Principles of Biochemistry With a Human Focus 1st Edition Garrett Test Bank

Page 1

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Chapter #2

Water, pH, and Ionic Equilibrium

Chapter 2 Water: The Medium of Life 1.

The unrivaled ability to form ___ hydrogen bonds per liquid water molecule is the source of the strong intermolecular attractions unique to water. a. b. c. d. e.

2.

Because of its highly polar nature, water is an excellent solvent for polar substances, but NOT for: a. b. c. d. e.

3.

water acetic acid ethanol hexane benzene

The average lifetime of a hydrogen bond connection in water is on the order of: a. b. c. d. e.

5.

salts. sugars. aldehydes and ketones. hydrocarbons. alcohols and amines.

The solvent with the highest dielectric constant in this group is: a. b. c. d. e.

4.

1 2 3 4 5

picoseconds. microseconds. milliseconds. seconds. nanoseconds.

All of the following characteristics are associated with the solvent water EXCEPT: a. b.

a high surface tension. a chemically inert solvent, which has a great capacity to dissolve a diverse spectrum of molecules and ions. c. low heat capacity. d. a high dielectric constant. e. a high capacity to form hydrogen bonds. Copyright 2002 by Harcourt, Inc. 6

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