Choosing an appropriate acid-base indicator is crucial in various chemical and biological applications. Acid-base indicators are substances that undergo a distinct color change over a specific pH range, enabling the visual determination of the acidity or alkalinity of a solution.
The selection of an acid-base indicator depends on several factors, including the desired pH range of interest, the accuracy required, and the compatibility with the sample being tested. Common types of acid-base indicators include phenolphthalein, methyl orange, and litmus, each with its unique color change characteristics and pH ranges.
