5.1 : Complexometric Titration: Overview

Complexometric titrations involve reactions of ligands with suitable metal ions to generate metal–ligand complexes.

The titration is often performed using a visual indicator, which first forms a relatively weak metal–indicator complex that gives the solution an initial color.

As the titration approaches the equivalence point, all free metal ions are consumed, and any excess ligand displaces the indicator from the metal–indicator complex.

The rapid color change that follows marks the end point of the titration.

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.

Tags

Complexometric Titration Metal Ion Ligands Visual Indicator End Point Detection Metal indicator Complex Color Change Equivalence Point O O dihydroxyazo Compounds Eriochrome Black T Calmagite Indicator Displacement

Dal capitolo 5:

article

Now Playing

5.1 : Complexometric Titration: Overview

Complexometric Titration, Precipitation Titration, and Gravimetry

5.4K Visualizzazioni

article

5.2 : Complexometric Titration: Ligands

Complexometric Titration, Precipitation Titration, and Gravimetry

869 Visualizzazioni

article

5.3 : Properties of Organometallic Compounds

Complexometric Titration, Precipitation Titration, and Gravimetry

923 Visualizzazioni

article

5.4 : EDTA: Chemistry and Properties

Complexometric Titration, Precipitation Titration, and Gravimetry

1.7K Visualizzazioni

article

5.5 : EDTA: Conditional Formation Constant

Complexometric Titration, Precipitation Titration, and Gravimetry

697 Visualizzazioni

article

5.6 : EDTA: Auxiliary Complexing Reagents

Complexometric Titration, Precipitation Titration, and Gravimetry

525 Visualizzazioni

article

5.7 : EDTA: Direct, Back-, and Displacement Titration

Complexometric Titration, Precipitation Titration, and Gravimetry

2.3K Visualizzazioni

article

5.8 : EDTA: Indirect and Alkalimetric Titration

Complexometric Titration, Precipitation Titration, and Gravimetry

795 Visualizzazioni

article

5.9 : Complexometric EDTA Titration Curves

Complexometric Titration, Precipitation Titration, and Gravimetry

750 Visualizzazioni

article

5.10 : Effects of EDTA on End-Point Detection Methods

Complexometric Titration, Precipitation Titration, and Gravimetry

237 Visualizzazioni

article

5.11 : Masking and Demasking Agents

Complexometric Titration, Precipitation Titration, and Gravimetry

2.3K Visualizzazioni

article

5.12 : Precipitation Titration: Overview

Complexometric Titration, Precipitation Titration, and Gravimetry

5.0K Visualizzazioni

article

5.13 : Precipitation Titration Curve: Analysis

Complexometric Titration, Precipitation Titration, and Gravimetry

1.0K Visualizzazioni

article

5.14 : Precipitation Titration: Endpoint Detection Methods

Complexometric Titration, Precipitation Titration, and Gravimetry

1.6K Visualizzazioni

article

5.15 : Gravimetry: Overview

Complexometric Titration, Precipitation Titration, and Gravimetry

4.4K Visualizzazioni

See More

Copyright © 2025 MyJoVE Corporation. Tutti i diritti riservati