Neutralisation Titration:
Titrations of strong acids or weak acids along with hydroxide ions provided at a cathode have been building.
2H2O + 2e 2OH- + H2 (g) (cathode reaction)
The cells shown in Figure could be used to generate hydroxide ions.
Endpoints could be detected through the use of indicators. Therefore, potentiometric endpoints could also be employed depending upon the availability of instruments. A real benefit of such coulometric titrations is in which interference from carbonate ions could be prevented through the generation of hydroxide ions, free from carbonate ions. Yet, it is essential to deaerate the solution along with an inert gas before starting the analysis to prevent the interference of carbonate ions.
Titrations of strong/weak bases are probable along with hydrogen ions produced at a platinum anode
H2O ? ½ O2 (g) + 2H+ + 2e (Anode reaction)
In the above equation the cathode must be isolated from the solution to avoid the interference of hydroxide ions generates at that electrode.