Chapter 16, Problem 122A

Interpretation Introduction

Interpretation: The relation between surface tension and intermolecular attraction in a liquid is to be determined.

Concept introduction: Surface tension is a phenomenon associated with liquid materials which explain the elastic forces present on the surface of liquids.

Answer to Problem 122A

Surface tension and intermolecular forces have a direct relationship. As the intermolecular forces between molecules increases surface tension will also increase.

Explanation of Solution

The weakness or the strongness of bonds is explained with the help of intermolecular forces. It is the force that exists between the molecules of a particular liquid. Every liquid molecule has a certain attractive force in between the molecules. In the case of water, the attractive force is hydrogen bonding.

It is the reason for the increased surface tension of water. So, when the attractive force is increasing, the strength of the bond present in between the liquid molecules will therefore increase, thereby, increasing the surface area of liquids. Hence, an increase in intermolecular forces will increase the surface tension too.