Kinetics and mechanism of alkaline hydrolysis of N-(o aminophenyl)phthalimide in the presence and absence of cationic micelles and sodium salts of aliphatic acids

Ahmad, Wan Hamdah Wan and Fagge, Ibrahim Isah and Sim, Yoke Leng and Khan, Mohammad Niyaz (2018) Kinetics and mechanism of alkaline hydrolysis of N-(o aminophenyl)phthalimide in the presence and absence of cationic micelles and sodium salts of aliphatic acids. Progress in Reaction Kinetics and Mechanism, 43 (2). pp. 144-156. ISSN 1468-6783

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Official URL: https://doi.org/10.3184/146867818X15161889114510

Abstract

Pseudo first-order rate constants, kobs, for the alkaline hydrolysis of N-(o-aminophenyl) phthalimide, obtained at constant [CTABr]T (total concentration of cetyltrimethylammonium bromide) and varying concentrations of inert salt MX (MX = sodium formate, sodium acetate, sodium propanoate, sodium butyrate, sodium valerate and sodium hexanoate) follow the relationship: kobs (K0 + θKX/S [MX])/(1 + KX/S [MX]) where θ and KX/S are empirical constants and S = HO-. The values of KX/S for each aliphatic acid decrease with an increase in [CTABr]T. This relationship gives an empirical constant whose magnitude is the measure of the ability of an ion, X- X/S, to expel another counterion S-, from the cationic micellar surface to the bulk aqueous phase. The values of the empirical constant, K X/S, are used to derive the ion exchange constant, KBr X.

Item Type: Article
Uncontrolled Keywords: Counterions; Hydrolysis of N-(o-aminophenyl) phthalimide; Micelles
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 21 Feb 2019 02:42
Last Modified: 21 Feb 2019 02:42
URI: http://eprints.um.edu.my/id/eprint/20411

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