What is the primary function of a pH indicator in electrochemical experiments?

The primary function of a pH indicator in electrochemical experiments is to determine the acidity or alkalinity of a solution. pH indicators are substances that change color in response to changes in pH, allowing researchers to visually assess the hydrogen ion concentration within a solution. This is crucial in electrochemical experiments because the acidity or alkalinity of a solution can significantly influence the behavior of electrodes, the kinetics of redox reactions, and the overall electrochemical processes taking place.

By providing a clear indication of the pH level, these indicators enable precise control over conditions that can affect reaction rates and the efficiency of the processes being studied. Maintaining an appropriate pH is essential for accurate and repeatable results in electrochemistry, making the determination of acidity or alkalinity a critical role of pH indicators in these experiments.