Chapter 13, Problem 90QP

Interpretation Introduction

Interpretation:

The reason for using $\text{HIn}$ and ${\text{In}}^{-}$ in order to represent different forms of indicators is to be explained. The symbol represents the acidic form and the basic form of an indicator is to be determined.

Concept Introduction:

The $\text{pH}$ value of a substance or solution helps in determining the acidic character or the basic character of that substance or solution.

The $\text{pH}$ of a solution is measured by a $\text{pH}$ meter or by using indicators. Indicators are brightly colored organic dyes and are weak acids and bases.