• Uncatalysed oscillations in the bromate — pyrogallol system

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/092/03/0221-0225

    • Keywords

       

      Oscillatory reaction; periodic reaction; uncatalysed oscillations; bromate-sulphuric acid/perchloric acid-pyrogallol system; effect of monomer; activation energy

    • Abstract

       

      Studies on the bromate-pyrogallol system with sulphuric and perchloric acids are presented. The addition of acrylamide and acrylonitrile to the oscillatory system indicates the presence of free radicals. The apparent energy of activation for the overall process is 10.1± 1 and 20 ± 0.5 kcal mol-1 respectively for sulphuric and perchloric acids. The static potential measurements with different constituents together with double recording of oscillations with a platinum and Ag/AgBr indicator electrode establish that oscillations are caused by continuous change in the concentration of bromine and bromide ions.

    • Author Affiliations

       

      R Ramaswamy1 S Ramanathan1

      1. Department of Chemistry, Indian Institute of Technology, Madras - 600 036, India
    • Dates

       
  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.