Effects of anionic surfactants on the kinetics of acidic hydrolysis of acetohydroxamic acid

School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492 010, Chhattisgarh, India E-mail: kallolkghosh@yahoo.com Fax : 91-771-2262583 Manuscript received 20 May 2010, accepted 03 June 2010 The acid-catalyzed hydrolysis of acetohydroxamic acid (AHA) in nitric acid solution has been studied spectrophotometrically in absence and presence of anionic surfactants, i.e. sodium dodecyl sulphate (SOS), sodium dodecylbenzene sulfonic acid (SOBS), lithium dodecyl sulphate (LOS) and sodium 1-oclane sulphonic acid (SOS). The variation of the rate constant with respect to the increasing concentration of anionic surfactant was examined. It was observed that the anionic surfactants accelerate the rate of reactions for hydrolysis of AHA in nitric acid. Activation parameters have also been determined