Summary
The kinetics of the oxidation of sulphite by hexachloroplatinate(IV) has been studied over wide range of experimental conditions. The reaction is first-order in substrate and in platinum(IV). The rate decreases with the increase in acidity. The effect of salt and of changing dielectric constants on the reaction rate have been studied. Values of ΔH‡ and ΔS‡ have been calculated and are 26.3 kJ mol−1 and −35.9 JK−1 mol−1, respectively. On the basis of experimental evidence, a two-electron reduction mechanism is proposed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D. Benson,Mechanisms of Inorganic Reactions in Solution, McGraw-Hill, U.K., p. 165 1968.
W. C. E. Higginson and J. W. Marshall,J. Chem. Soc., 447 (1957).
J. Veprek-Siska, D. M. Wagnerova and K. Eckschlarger Coll-Czech,Chem. Comm.,31, 1248 (1966).
A. Brown and W. C. E. HigginsonJ. Chem. Soc., Chem. Comm., 167 (1972).
G. P. Haight, E. Perchonock, E. Emmenegger and G. Gordon,J. Am. Chem. Soc.,87, 1833 (1965).
M. W. Lister and P. Rosenblum,Can J. Chem.,41, 2727 (1963).
A. Brown and W. C. E. Higginson,J. Chem. Soc. Chem. Comm., 725 (1967).
J. M. Lancaster and R. S. Murray,J. Chem. Soc. A, 2755 (1971).
R. S. Murray,J. Chem. Soc., Dalton Trans., 2381 (1974).
K. K. Sen Gupta, S. Das and P. K. Sen,Transition Met. Chem., in press.
C. R. Dennis, S. A. Basson and J. G. Leipoldt,Polyhedron,2, 1357 (1983).
J. K. Beattie and F. Basolo,Inorg. Chem.,10, 486 (1971).
J. K. Beattie and F. Basolo,Inorg. Chem.,6, 2069 (1967).
J. Halpern and M. Pribanic,J. Am. Chem. Soc.,90, 5942 (1968).
A. Peloso and M. Basato,J. Chem. Soc. A, 725 (1971).
A. Peloso and M. Basato,J. Chem. Soc., Dalton Trans., 2040 (1972).
K. G. Moodley and M. J. Nicol,J. Chem. Soc., Delton Trans., 239 (1977).
A. I. Vogel,Quantitative Inorganic Analysis, ELBS, London 3rd Edit., p. 370 (1961).
A. A. Grinberg,The Chemistry of Complex Compounds, Pergamon Press, London, p. 189, 1962.
C. Moreau and G. Douheret,J. Chem. Thermodyn.,8, 403 (1976).
E. S. Amis,Solvent Effect on Reaction Rates and Mechanism, Academic Press, New York, p. 28 1966.
K. K. Sen Gupta and P. K. Sen,J. Inorg. Nucl. Chem.,39, 1651 (1977).
W. C. E. Higginson, D. Sutton and P. Wright,J. Chem. Soc., 1380 (1953).
W. M. Latimer,Oxidation Potentials, Prentice Hall, U.S.A., 2nd Edit, p. 206, 1961.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gupta, K.K.S., Das, S. & Gupta, S.S. Kinetics of oxidation of sulphite by hexachloroplatinate(IV) in acidic solution. Transition Met Chem 12, 417–420 (1987). https://doi.org/10.1007/BF01171652
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01171652