Related Experiment Video
Updated: Jun 28, 2026

Precise Electrochemical Sizing of Individual Electro-Inactive Particles
Published on: August 4, 2023
Construction of a permanganate ion-selective electrode and its application to potentiometric titrations
M Kataoka1, N Unjyo, T Kambara
1Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060, Japan.
Abstract:
The construction of a liquid-membrane type permanganate ion-selective electrode and its application to potentiometric titrations are described. The benzylcetyldimethylammonium-permanganate ion-pair in the aqueous phase is easily extracted into nitrobenzene and the extract is employed as the liquid ion-exchange membrane of the ion-selective electrode. The electrode gives Nernstian response to permanganate in the concentration range from 10(-6) to 10(-1)M, and the potential is almost independent of pH over the range from 3.0 to 10.5. The electrode can be used as indicator electrode in potentiometric titrations with permanganate.
Related Concept Videos
Potentiometric Titration: Overview
Potentiometry: Membrane Electrodes
Potentiometry: Overview
Potentiometry: Types of Electrodes
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
Redox Titration: Other Oxidizing and Reducing Agents
Electrodes: Overview
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in the...
