Conductometric Titration
A titration in which the end point is found from changes in the conductivity of the solution.
Unit
S/m
In depth
Conductivity changes as ions of high mobility are replaced by ions of lower mobility, giving V-shaped or sharply angled plots whose intersection marks the end point. The method needs no indicator and works well with coloured, turbid or very dilute solutions.
Examples in the real world
Titrating HCl with NaOH: conductivity falls as fast H⁺ is replaced by Na⁺, then rises as excess OH⁻ accumulates.