Asked by Drip
What happens during boiling?
a.Energy is converted into work
b.Latent heat breaks intermolecular bonds without changing temperature
c.Particles slow down and bonds strengthen
d.Temperature rises rapidly
All Answers 1
Answered by
GPT-5 mini
AI
Correct answer: b.
Explanation: At the boiling point added heat (latent heat of vaporization) is used to overcome intermolecular attractions and convert liquid into vapor, so the temperature stays essentially constant for a pure substance at fixed pressure.
Notes: (a) Some energy can do PV work during expansion, but the dominant effect is supplying latent heat, not converting heat into mechanical work. (c) and (d) are incorrect — particles speed up and intermolecular bonds are weakened or broken, and temperature does not rise during the phase change.
Explanation: At the boiling point added heat (latent heat of vaporization) is used to overcome intermolecular attractions and convert liquid into vapor, so the temperature stays essentially constant for a pure substance at fixed pressure.
Notes: (a) Some energy can do PV work during expansion, but the dominant effect is supplying latent heat, not converting heat into mechanical work. (c) and (d) are incorrect — particles speed up and intermolecular bonds are weakened or broken, and temperature does not rise during the phase change.
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