Chiorine Isotopic Exchange Reaction between Chloramine-T and Chloride Ion

Using radiotracer technique and ion exchange Separation of reactants, the kinetics of chlorine isotopic exchange reaction between chloramine-T (CAT) and Chloride ion has been studied. MC KAY's plots are linear. The exchange reaction is fast in acidic medium, very slow in neutral medium and no exchange takes place in alkaline medium. In the acidic rnge, the rate is maximum at pH 2.8. There is a decrease in the rate in pH > 2.8 and pH < 2.8. The order with respect to H+ ion is unity at pH > 5. The chlorine exchange reaction seems to be of first Order in CAT and Cr ion. Activation energy and activation entropy for this reaction are calculated. © 1983, Walter de Gruyter. All rights reserved.