• R Ramaswamy

      Articles written in Journal of Chemical Sciences

    • The iodate-hydrogen peroxide system: An oscillatory chemical reaction

      R Ramaswamy N Ganapathisubramanian J C Kuriacose K S G Doss

      More Details Abstract Fulltext PDF

      Certain salient features of the oscilliatory reaction in the iodate-hydrogen peroxide-manganese sulphate-malonic acid system are presented. Oscillations were followed by recording the potential developed at a platinum electrode. Reproducibility of the results in such a complicated system is established. Evidence is provided for the periodic formation of Mn3+ in the system. Effect of the concentration of the constituents as well as the effect of temperature are discussed.

    • Exchange current density as control for oscillatory reactions

      R Ramaswamy S Ramanathan

      More Details Abstract Fulltext PDF

      The oscillation characteristics of the iodate systems (Briggs-Rauscher reaction) and the bromate system (Belousov-Zhabotinskii reaction) with ethylacetoacetate show that the species responsible for the oscillations in these two systems are different. This arises from a large value of the exchange current density for Pt/I2/I. The inclusion of ferroin in an uncatalysed bromate system (ubs) leads to a switchover to a new oscillatory phase, catalysed bromate system (cbs). Oscillation inubs is caused by a periodic change in the concentration of bromine. The switchover in oscillation characteristics on the addition of ferroin results from the value of the exchange current density for Pt/Fe(III)/Fe(II) being larger than Pt/Br2Br.

  • Journal of Chemical Sciences | News

© 2022-2023 Indian Academy of Sciences, Bengaluru.