Oxidation-Reduction titrations (Redox titrations):

The oxidising reagents like as iodine, bromine, chlorine, Ce⁴⁺ and the unusual oxidation states of certain ions   like as Ag²⁺, Mn³⁺ and U⁴⁺ can be produced through making use of coulometric methods and the Table 5.3 lists a few of the applications of these reagents.

Coulometric titrations of redox titrations suppose importance since of the option of insitu generation of unusual/unstable reagents like as bromine, dipositive silver ions, tripositive manganese ions and etc.  Conventional volumetric analysis cannot handle/prepare these reagents. The Electrogenerated bromine has been proved to be extremely meaningful for the determination of phenol, aniline, mustard gas, As (III), Sb(III), etc.  A bromine solution is quite unstable and cannot be used as a titrant in conventional volumetry and hence one has to use a Winkler's solution (bromate-bromide mixture) to carry out reactions including bromine. Table 5.3 gives summary of applications of coulometric titrations.