Document Abstract
The effect of anionic surfactant, di-octylsodium sulphosuccinate (AOT) and nonionic surfactant, polyoxyethylene
sorbitanmonooleate (Tween-80) on the hydrolysis of di-2,3-dichloroaniline phosphate was studied spectrophotometrically at
303 K. The influence of inorganic salts on the reaction rate was studied. The added salts viz. KCl, KNO3, and K2SO4
accelerated the rate of the reaction in the presence of anionic and nonionic micelles. The role of anionic and non-ionic
micelle has been explained by the Menger-Portnoy, and Piszkiewicz models. The binding constant (Ks), rate constant (kψ) in
the micellar phase, co-operativity index (n) and various thermodynamic activation parameters viz. ΔEa, ΔS≠, ΔH≠, ΔG≠ etc.
have been evaluated. Possible reaction mechanism has been proposed on the basis of the observed kinetic data.