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Title: Effect of micelles on hydrolysis of di-2,3-dichloroaniline phosphate
Authors: Chhetri, Nisha
Bhoite, Shashikala A
Singh, Ajaya Kumar
Jain, Bhawana
Keywords: Hydrolysis;Di-2,3-dichloroanilinephosphate;Menger-Portnoy’s;Piszkiewicz’s;Berezin models
Issue Date: Apr-2020
Publisher: NISCAIR-CSIR, India
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. ∆Ea, ∆S≠, ∆H≠, ∆G≠ etc. have been evaluated. Possible reaction mechanism has been proposed on the basis of the observed kinetic data.
Page(s): 551-562
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.59A(04) [April 2020]

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