Neutralization titrations:
Titration of a strong acid or weak acids with hydroxide ions generated at a cathode.
2H2O + 2e ⇔ 2 OH - + H2 (g) at cathode
Internal generating cell or external generating can be used to produce hydroxide ions.
One of the major benefits of Coulometric titration of acids is which difficulties related with the presence of CO2 within the test solution or of carbonate in the standard titration base are simply prevented. CO2 could be removed complicity from the solution through passing nitrogen gas before the titration in commenced. The presence of any substance which is reduced more simply than hydrogen ion or water at platinum cathode or that is oxidized more easily than water at platinum anode will interfere.