conductometry

Conductometry is an instrumental method of chemical analysis that measures a solution's ability to conduct an electrical current. This property, known as conductance, is directly related to the presence and type of ions dissolved in the solution.12

In liquid solutions, ions are responsible for carrying the electrical current between electrodes. Factors influencing conductance include the number and charge of ions, as well as their size, which affects their mobility. Conductometry is not suitable for analyzing undissociated molecules because it relies on the presence of ions.1

The primary uses of conductometry are to monitor the overall ion content in a solution and to determine the endpoint of titrations involving ions. For example, conductivity meters are used in water purification systems to ensure the absence of ions. Conductometric titrations involve plotting conductance against the volume of added titrant, with the intersection of extrapolated linear regions indicating the endpoint.1