Which of the following change is observed occurs when a substance X is converted from liquid to vapour phase at the standard boiling point? I. Potential energy of the system cecreases II. The distance between molecules increases III.The average kinetic energy of the molecules in both phases are equal
A
I only
B
II only
C
III only
D
II and III only
Text Solution
Verified by Experts
The correct Answer is:
d
(d) Due to phase transfer distance between particle changes, because temperature remains constant, so KE remains constant.
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