Question

The potential energy of a molecules on the surface of a liquid compared to the one inside the liquid is :

• A. Zero
• B. Lesser
• C. Equal
• D. Greater

Answer 1

Answer: (D)

Greater

The Surface tension acts on the molecules on the surface of a liquid.

while there is no such effect on the molecules in side the bulk of the liquid.

So potential energy of a molecules on the surface of a liquid compared to the one inside the liquid is greater.