PA2 Potentiometry

Branch of electrochemistry which deals with the study and measurement of electrode potential

• Polarimetry
• Potentiometry
• Spectrometry
• Chromatography

Provides a stable and known potential.

• Reference Electrode
• Indicator Electrode
• Potentiometer

Its potential changes with the concentration of the analyte ion

• Reference Electrode
• Indicator Electrode
• Potentiometer

A device that measures the potential difference between the reference and indicator electrodes

• Reference Electrode
• Indicator Electrode
• Potentiometer

Measures the potential of the indicator electrode directly related to the analyte concentration.

• Direct potentiometry
• Potentiometric Titration

Commonly used for pH measurements and specific ion concentration measurements

• Direct potentiometry
• Potentiometric Titration

The potential is measured as a titrant is added to the analyte solution

• Direct potentiometry
• Potentiometric Titration

The endpoint of the titration is indicated by a sharp change in potential

• Direct potentiometry
• Potentiometric Titration

The most common application of potentiometry, using a glass electrode as the indicator electrode.

• pH Measurement
• Ion-Selective Electrode (ISE) Measurements
• Redox Potentiometry

Used to measure specific ions such as Na+, K+, Ca2+, Cl−, and others.

• pH Measurement
• Ion-Selective Electrode (ISE) Measurements
• Redox Potentiometry