The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal _____________ in the two phases?
Correct answer: A. Kinetic energy
- A. Kinetic energy
- B. Intermolecular forces
- C. Potential energy
- D. Total energy
Explanation
At equilibrium and the same temperature, the average molecular kinetic energy is equal in both phases. Potential and total energies differ because vaporisation changes intermolecular separation and energy.
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