Chapter 14, Problem 14B.6P

(a)

Interpretation Introduction

Interpretation:

The potential energy of the interaction between two rings treated as benzene molecules separated by $\text{0}\text{.4}\text{nm}$ has to be estimated.

Concept introduction:

London dispersion forces arise due to the attraction between atoms that form temporary dipoles.  The attraction between two dipoles does not average to zero.  It gives rise to dipole-induced dipole interactions.  This interaction is termed as the dispersion interaction or the London interaction.

(b)

Interpretation Introduction

Interpretation:

The distance dependence of the force acting between two non-bonded groups of atoms has to be determined.  The separation at which the force between the two phenyl groups of two $\text{Phe}$ residues is zero has to be determined.

Concept introduction:

As mentioned in the concept of introduction in part (a).