Chapter 14, Problem 14A.9BE

Interpretation Introduction

Interpretation:

The relative permittivity of bromobenzene having polarizability volume $1.5\times {10}^{-29}{\text{m}}^3$ and dipole moment $5.17\times {10}^{-30}\text{C}\text{m}$ at $25{}^{\text{ο}}\text{C}$ is to be calculated.

Concept introduction:

When the molecules are polar or extremely polarizable, then the substance has large relative permittivity.  The interaction between the relative permittivity and the molecule’s electrical characteristic is acquired by considering a medium's polarization.  It is expressed by the Debye equation, as shown below.

    $\frac{{\epsilon }_{\text{r}}-1}{{\epsilon }_{\text{r}}+2}=\frac{\rho P_{\text{m}}}{M}$