Chemical Engineering Thermodynamics (MCQs)

There is a change in __________ during the phase transition.

  • A. Volume
  • B. Pressure
  • C. Temperature
  • D. All of the above
Answer: Option A.
Explanation: 
The phase change occurs at constant temperature and pressure under normal situations. But the volume changes because between two phases always there is a change in intermolecular forces except at critical condition. Eg: when liquid is converting to vapor the vapor formed will have more volume than liquid.

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