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- Title
KINETIC STUDY OF THE OXIDATION OF THIOSULPHATE BY HEXACYANOFERRATE(III) IN WATER POOLS OF CETYL TRIMETHYL AMMONIUM BROMIDE REVERSE MICELLES.
- Authors
Kilana, Venkata Nagalakshmi; Pulipaka, Shyamala; Pulugurtha, Venkata Subba Rao
- Abstract
A kinetic study of the oxidation of thiosulphate (S2O32-) by hexacyanoferrate (III) ([Fe(CN)6]3-) is carried out in the presence of cetyl trimethyl ammonium bromide (CTAB) reverse micelles. The reaction obeys first order kinetics with respect to each of the reactants at all values of W, {W= [H2O]/[CTAB]}. In the reverse micellar medium, the reaction is much slower compared to that in the aqueous medium due to lower micropolarity of the water pools which does not facilitate an anion-anion reaction. The second order rate constant (k2) increases as the value of W increases up to a value of 8.88 and remains constant thereafter. The effect of CTAB concentration is explained by the modified Berezin pseudo phase model for weakly bound reactants leading to the conclusion that it is also valid for the reverse micelles.
- Subjects
THIOSULFATES; FERRITES; TRIMETHYL ammonium compounds; AMMONIUM bromide; REVERSED micelles; CHEMICAL kinetics
- Publication
Journal of Chemical Technology & Metallurgy, 2019, Vol 54, Issue 1, p17
- ISSN
1314-7471
- Publication type
Article