Study of Chemical Oscillation in a Mixed Substrate System of Gallic Acid and Acetone using Cerium(IV) Ions as Catalyst and a Comparative Study of the Catalytic Activity of Cerium(IV) Ions and Ferroin

Department of Chemistry, University College of Science, 92 Acharya Prafulla Chandra Road, Calcutta-700 009

Manuscript received 9 August 1996, revised 21 February 1997, accepted 25 February 1997

Chemical oscillation has been studied using gallic acid and varying amounts of acetone as the mixed organic substrate both visually and potentiometrically side by side by the batch method. Ce^IV ions have been used as catalyst and sulphuric acid as the medium. The results have been compared with those obtained earlier in perchloric acid and sulphuric acid media using ferroin as catalyst. Studies have also been made to judge the relative efficiency of ferroin and Ce^IV ions as catalyst with single and mixed organic substrate.