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α-effect of hydroxamate ions in micellar mediated reactions of p-nitrophenyl acetate

The rate-surfactant concentration profiles for the reaction of p-nitrophenyl acetate (PNPA) with three hydroxamate ions (R C 6 H 4 CO NHO - ; R = H, 2-OH, 4-OCH 3 ) in aqueous solutions of cetyltrimethylammonium bromide (CTAB) have been studied at 27°C (pH 7.7). In transferring the reaction from water to micelles of CTAB, an increase in reaction rates have been observed.