The differences in melting and boiling points of the given compounds have to be accounted. Concept Introduction: Intermolecular forces in a molecule are the important factor which is responsible for the physical changes of the molecule. The intermolecular forces in gases are negligibly small and the forces are comparatively stronger in liquids and the intermolecular forces are highest in solids. The stronger the intermolecular forces, closer will be the molecules in contact and thus higher will be the boiling point and melting point of the substance. Hydrogen bonding is a special type of dipole-dipole interaction in a polar bond which has hydrogen atom and a highly electronegative atom such as Nitrogen, Oxygen and Fluorine. Hydrogen bonding can also be defined as coulombic attraction between the hydrogen atom and an electronegative atom.

Question

Draw several molecules of methanamide and show the intermolecular hydrogen bonding that account for the amide’s very high boiling point.

Answer 1

Question

Chapter 18, Problem 18.14P

Interpretation Introduction

Interpretation:

The differences in melting and boiling points of the given compounds have to be accounted.

Concept Introduction:

Intermolecular forces in a molecule are the important factor which is responsible for the physical changes of the molecule.

The intermolecular forces in gases are negligibly small and the forces are comparatively stronger in liquids and the intermolecular forces are highest in solids.

The stronger the intermolecular forces, closer will be the molecules in contact and thus higher will be the boiling point and melting point of the substance.

Hydrogen bonding is a special type of dipole-dipole interaction in a polar bond which has hydrogen atom and a highly electronegative atom such as Nitrogen, Oxygen and Fluorine. Hydrogen bonding can also be defined as coulombic attraction between the hydrogen atom and an electronegative atom.

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