All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Abstract

Kinetics and Mechanism of Oxidation of Co (II) Edta by Chromium (VI) : Effect of Micelle

Author(s): D. Surya Kala, M. K. Chakravarthy, K. Rama Krishna and P. V. Subba Rao

The kinetics of oxidation of metal ion complex [Co (II) EDTA] by chromium (VI) in perchloric acid medium has been investigated spectrophotometrically at 535 nm. The reaction is first order with respect to complex and the oxidant, and markedly inhibited by H+ under the conditions [Cr(VI)] << [Co(II)EDTA]. The reaction obeys the following rate law with respect to EDTA is as follows. K [H ] kK [Co(II)EDTA] [Cr(VI)] [CoYH O ] dt d a 2 a t 2 + − + = where Y = EDTA in the tetra negative form. In the oxidation of Co (II) EDTA by Cr (VI) anionic micelle (sodium dodecyl sulphate) caused acceleration at sub micelle concentration; where as neutral micelle (triton X-100) caused deceleration in rate. A possible mechanism consistent with the observed results is proposed.


Share this       
Google Scholar citation report
Citations : 9398

International Journal of Chemical Sciences received 9398 citations as per Google Scholar report

Indexed In

  • Google Scholar
  • Open J Gate
  • China National Knowledge Infrastructure (CNKI)
  • Cosmos IF
  • Geneva Foundation for Medical Education and Research
  • ICMJE

View More