Chapter 12, Problem 12.9QP

Interpretation Introduction

Interpretation:

The increase in the boiling points of the given binary hydrogen compounds, has to be reasoned out.

Concept Introduction:

The dispersion forces are the intermolecular forces that are acting between the binary hydrogen molecules and are being the only reason for the trends of increase and decrease in the melting and boiling points of the compounds of binary hydrogen.

Dispersion forces: The electronic distribution in one molecule induces an instantaneous dipole moment in it.  This instantaneous dipole moment in each molecule creates a temporary dipole moment among the surrounding molecules.  Such an interaction existing between binary hydrogen compounds is known as the dispersion force.