Kinetics of the Alkaline Hydrolysis of N-Phenylbenzohydroxamic Acid

School of Studies in Chemistry, Pt Ravishankar Shukla University, Raipur-492 010

Manuscript received 23 September 1993, revised 4 January 1994, accepted 1 March 1994

Kinetics of the alkaline hydrolysis of N-phenylbenzohydroxamic acid have been investigated spectrophotometrically in sodium hydroxide in 10% (v/v) dioxan at several temperatures. The enthalpies and entropies of activation have been evaluated, as also the salt, solvent isotope and solvent (dioxan) effects for the substrate. The effects of substitution have been assessed by means of the Hammett equation. A suitable mechanism has been formulated in accordance with the experimental results.