Chapter 8.4, Problem 4CP

Interpretation Introduction

Interpretation:

The percentage ionic character of the bond in $\text{HCl}$ is to be determined.

Concept Introduction:

The magnitude of partial charges is calculated by the expression as follows:

$Q=\frac{\mu }{r}$

Here, $Q$ is the charge, $\mu$ is the dipole moment and $r$ is the bond length.

The value of dipole moment is measured in Coulomb meter and the bond length should be taken in meter.

Percentage ionic character is defined as the ratio of observed dipole moment to calculated dipole moment.

The percentage ionic character is calculated by the expression as follows: $\text{Percentage ionic character}=\frac{\mu \left(\text{observed}\right)}{\mu \left(\text{calculated}\right)}\times 100$

The relation between $\text{m}$ and ${\text{A}}^{\text{o}}$ can be expressed as:

${\text{1 A}}^{\text{o}}=1\times {10}^{-10}\text{m}$

To convert ${\text{A}}^{\text{o}}$ to $\text{m}$, conversion factor is $\frac{1\times {10}^{-10}\text{m}}{1\text{A}°}$

The relation between $\text{D}$ and $\text{Cm}$ can be expressed as:

$\text{1 D}=3.336\times {10}^{-30}\text{Cm}$

To convert $\text{Cm}$ to $\text{D}$, conversion factor is $\frac{1\text{D}}{3.336\times {10}^{-30}\text{C}.\text{m}}$