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Abstract

KINETICS AND MECHANISM OF HYDROLYSIS OF DI-4- CHLOROTHIOPHENYL PHOSPHATE ESTER VIA CONJUGATE ACID SPECIES

Asha Verma and Firdous Andleep*

ABSTRACT

Kinetic study Di-4-chlorothiophenyl phosphate has been carried out at 980C in acid region from 0.1 – 7.0 mol dm-3 HCl and in buffer medium (1.24-7.46pH). The kinetic study was performed in 10% aqueous dioxan (V/V). The study has yielded pseudo first order rate coefficients. Theoretical and experimental rates have been found to be in close agreement as estimated from second empirical term of Debye- Huckle equation. Arrhenius parameters and comparative kinetic rate data have been used to propose the tentative mechanism.

Keywords: Di-4-chlorothiophenyl phosphate, Debye-Huckle equation, Arrhenius parameters.


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