Complexometric titration involves the formation of a complex by reacting a metal ion with one or more ligands. A visual indicator often detects the end point of a complexometric titration. It is added to the metal solution before the titration, forming a stable metal–indicator complex and imparting color to the solution. As the titration approaches the equivalence point, the excess of the added ligand displaces the indicator from the metal–indicator complex, releasing the free indicator. The free indicator formation changes the color of the solution rapidly, signaling an endpoint. O,O′-dihydroxyazo compounds, such as eriochrome black T and calmagite, are frequently used as indicators in complexometric titrations.
From Chapter 5:
Now Playing
5.1 : Complexometric Titration: Overview
Complexometric Titration, Precipitation Titration, and Gravimetry
4.1K Views
5.2 : Complexometric Titration: Ligands
Complexometric Titration, Precipitation Titration, and Gravimetry
764 Views
5.3 : Properties of Organometallic Compounds
Complexometric Titration, Precipitation Titration, and Gravimetry
782 Views
5.4 : EDTA: Chemistry and Properties
Complexometric Titration, Precipitation Titration, and Gravimetry
1.5K Views
5.5 : EDTA: Conditional Formation Constant
Complexometric Titration, Precipitation Titration, and Gravimetry
591 Views
5.6 : EDTA: Auxiliary Complexing Reagents
Complexometric Titration, Precipitation Titration, and Gravimetry
471 Views
5.7 : EDTA: Direct, Back-, and Displacement Titration
Complexometric Titration, Precipitation Titration, and Gravimetry
1.8K Views
5.8 : EDTA: Indirect and Alkalimetric Titration
Complexometric Titration, Precipitation Titration, and Gravimetry
598 Views
5.9 : Complexometric EDTA Titration Curves
Complexometric Titration, Precipitation Titration, and Gravimetry
671 Views
5.10 : Effects of EDTA on End-Point Detection Methods
Complexometric Titration, Precipitation Titration, and Gravimetry
203 Views
5.11 : Masking and Demasking Agents
Complexometric Titration, Precipitation Titration, and Gravimetry
2.0K Views
5.12 : Precipitation Titration: Overview
Complexometric Titration, Precipitation Titration, and Gravimetry
3.7K Views
5.13 : Precipitation Titration Curve: Analysis
Complexometric Titration, Precipitation Titration, and Gravimetry
839 Views
5.14 : Precipitation Titration: Endpoint Detection Methods
Complexometric Titration, Precipitation Titration, and Gravimetry
1.2K Views
5.15 : Gravimetry: Overview
Complexometric Titration, Precipitation Titration, and Gravimetry
3.3K Views
See More
Copyright © 2025 MyJoVE Corporation. All rights reserved