Which statement correctly describes the heat of vaporization in the context of phase changes?
A.
It is the energy released when a gas condenses into a liquid.
B.
It is the energy absorbed when a liquid boils into a gas.
C.
It is the same as the heat of fusion for all substances.
D.
It varies with the temperature of the substance.
Exam No：AP Chemistry Problem Set 3 Year：2024 Question No：APChemistry2024AP0499
Answer:
B
Knowledge points:
6.5 Energy of Phase Changes
Solution:
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