INTERACTION OF CHARCOAL WITH IODINE IN AQUEOUS SOLUTION

The interaction of charcoal with iodine in aqueous solution under different conditions have been studied in Mike detail & The amount of iodine removed from solution by charcoal under standard conditions is influenced considerably by the nature of the charcoal surface. Such determinations therefore cannot be used For measuring surface areas of charcoal. An appreciable fraction of the iodine removed from solution is, in fact converted into hydriodic acid, the corresponding amount of oxygen being chemisorbed by the charcoal. giving rise to CO,complex- While a small amount of iodine is adsorbed reversibly by all types of charcoals. another small amount is adsorbed irreversibly by degassed charcoals only..