Chapter 16, Problem 5E

Interpretation Introduction

Interpretation:

The percent ionization of a $\text{0}\text{.15}\text{M}$ benzoic acid solution in pure water and in $0.10\text{M}$ sodium benzoate solution is to be calculated. The difference in the percent ionization of the two solutions is to be stated.

Concept introduction: The amount of a weak acid that exists like ions at a definite concentration is termed as percent ionization of acid. The higher value of percent ionization of acid in the solution results in the higher conductivity of the solution. The formula to calculate percent ionization of acid is,

$\text{Percent}\text{ionization}\text{of}\text{acid}=\frac{\left[{\text{A}}^{-}\right]}{\left[\text{HA}\right]}\times 100$

To determine: The percent ionization of a $\text{0}\text{.15}\text{M}$ benzoic acid solution in pure water and in $0.10\text{M}$ sodium benzoate solution and the difference in the percent ionization of the two solutions.