Chapter 13, Problem 80E

Interpretation Introduction

Interpretation: The $\text{pH}$ of a vinegar solution and its $K_{\text{a}}$ value is given. The concentration of acetic acid in vinegar is to be calculated, given that vinegar is only an aqueous solution of acetic acid $\left({\text{CH}}_3\text{COOH}\right)$.

Concept introduction: The $\text{pH}$ of a solution is define as a figure that expresses the acidity of the alkalinity of a given solution.

The $\text{pH}$ of a solution is calculated by the formula, $\text{pH}=-\log \left[{\text{H}}^{+}\right]$

At equilibrium, the equilibrium constant expression is expressed by the formula,

$K_{\text{a}}=\frac{\text{Concentration}\text{of}\text{products}}{\text{Concentration}\text{of}\text{reactants}}$