Why does the latent heat of vaporization require so much heat energy?
a. The energy is needed to break the strong covalent bonds.
b. The energy is required to stabilize bond vibrations.
c. The energy is used to break the hydrogen bonds.
d. All of these choices.
ANS: D
The heat energy needed for the latent heat of vaporization is high because it is used to break hydrogen
bonds. These bonds are connecting the individual water molecules to each other. Information can be
found in the section Water Has Unusual Thermal Characteristics.
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