ASCORBIC ACID TITRATION
European Pharmacopoeia:
online.pheur.org/entry.htm
online.pheur.org/entry.htm
The recommended pharmacopoeial titration is a direct one where ascorbic acid will reduce the diode to iodide.
Titration involves two redox couples:
C6H6O6 / C6H8O6 ; I2/I- :