• Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Barium oxalate; silica hydrogel; periodic crystallization

    • Abstract


      The experimental conditions for obtaining periodic crystallization of barium oxalate in silica hydrogel are investigated. The Liesegang rings formed by the reaction of oxalic acid and barium chloride are studied. The dependence of velocity constant and the spacing coefficient on pH, concentrations of inner and outer electrolytes and temperature have also been studied and a possible mechanism for the behaviour is suggested. The deviations from Isemura’s general observations are interpreted by considering the microcrystals constituting the rings and the irreversibility of inner and outer electrolytes.

    • Author Affiliations


      S M Dharma Prakash1 P Mohan Rao1

      1. Department of Physics, Mangalore University, Mangala Gangothri, Mangalore - 574 199, India
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.