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

Effect of Surfactant on the Oxidation of M-Nitrophenol in Aqueous Acetic Acid Medium by Chloramine-T : A Kinetic Study

Author(s): Geetha Sarasan

Oxidation of m-Nitrophenol by Chloramine-T has been investigated both in the presence and absence of the surfactant, Cetyl pyridinium bromide (CPBr). The reaction could be studied only at a moderate concentration of acid (acetic acid). Kinetic investigation revealed that the order of the reaction with respect to Chloramine-T is one in the absence of Cetyl pyridinium bromide (CPBr). But in the presence of surfactant, the values of first order rate constant increases with increasing concentrations of Chloramine-T. It is observed that the rate has almost ten times acceleration in the presence of cetyl pyridinium bromide due to the catalysis by micelle. The order with respect to substrate (m-nitrophenol) is found to be zero in the absence of the surfactant and fractional in the presence of the surfactant. The plot of log k versus 1/T for various values of temperature is a straight line, which proved the validity of Arrhenius equation. Activation parameters like ∆E* , ∆H* , ∆S* , ∆G* , are evaluated and a plausible mechanism 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