Micellar mediated acid hydrolysis of N-p-tolylbenzohydroxamic acid

Kinetics of acid hydrolysis of N-p-tolylbenzohydroxamic acid has been studi ed in the presence of cationic micelles of dodecyltrimethylammonium bromide , tetradecyltrimethyl-ammonium bromide, cetyltrimethylammonium bromide, cet ylpyridinium chloride and cetylpyridinium bromide, anionic micelles of sodi um dodecyl sulphate and sodium dodecanoate, and non-ionic micelles of Brij- 35. Cationic, and non-ionic micelles inhibit and anionic micelles accelerat e the rate of hydrolysis. Kinetic data corresponding to the reaction with s urfactants are analysed using Portnoy - Menger and pseudo-phase ion exchang e models.