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Chemical Engineering · Q80

Chemical Engineering Thermodynamics

Engineering and GATE · Chemical Engineering · question 80

Q80

There is a change in __________ during the phase transition.

A.
Volume
Answer
B.
Pressure
C.
Temperature
D.
All of the above

Answer: Option A

Solution

Answer: Option A
Solution:
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.