Chapter 9, Problem 14Q

Interpretation Introduction

Interpretation:

• The atoms other than hydrogen that are necessary for the formation of hydrogen bond should be mentioned.

• The role of hydrogen on the can contribution to the strength of dipole-dipole forces should be discussed.

Concept introduction:

• Dipole-dipole interactions are the intermolecular forces exist in polar molecules. These interactions do operate and have significance only if the molecules do exist nearby with each other. It does readily become weak if the molecules move apart. So this interaction cannot always be permanent.

• Hydrogen bonding can be termed as a kind of polar covalent formed between hydrogen and high electronegative atoms like N, O, and F when both these atoms are present in the same compound.

• The dipole-dipole interactions are stronger in hydrogen bond due to the high polar nature of the bond. As a result hydrogen bonds are not as weak as usual dipole-dipole interactions. Hence they are special type of dipole-dipole forces.