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
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 but...
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| Main Authors: | , , , |
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| Format: | Article |
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Science Reviews 2000
2018
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/20411/ https://doi.org/10.3184/146867818X15161889114510 |
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| Summary: | 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. |
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