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1972•Zeitschrift für Naturforschung BOpen access

Kinetics and Mechanism of Os(VIII) Catalysed Oxidation of Mandelate Ion by Alkaline Ferricyanide

Gireesh Soni, G. D. Menghani

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Abstract

The kinetics of the reaction between alkaline ferricyanide and mandelic acid catalysed by [Os (VIII) ] has beeen studied. The rate of ferricyanide disappearance was found to be proportional to the concentration of mandelate ion and Os (VIII), but independent of the concentration of ferricyanide. Within a limited concentration range of hydroxyl ion [ [OH-1] < 0.25 M] the rate varies directly as the [OH⁻]. Effects of SO4 -2, ΝO3 -1NO3 -1 and temperature on the rate were studied. ΔΕ, PZ, AS* etc. were evaluated. Mechanism of oxidation of mandelic acid based on the formation of Os (VIII) acid anion complex is suggested.

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The kinetics of the reaction between alkaline ferricyanide and mandelic acid catalysed by [Os (VIII) ] has beeen studied. The rate of ferricyanide disappearance was found to be proportional to the concentration of mandelate ion and Os (VIII), but independent of the concentration of ferricyanide. Within a limited concentration range of hydroxyl ion [ [OH-1] < 0.25 M] the rate varies directly as the [OH⁻]. Effects of SO4 -2, ΝO3 -1NO3 -1 and temperature on the rate were studied. ΔΕ, PZ, AS* etc. were evaluated. Mechanism of oxidation of mandelic acid based on the formation of Os (VIII) acid anion complex is suggested.

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Available abstract

The kinetics of the reaction between alkaline ferricyanide and mandelic acid catalysed by [Os (VIII) ] has beeen studied. The rate of ferricyanide disappearance was found to be proportional to the concentration of mandelate ion and Os (VIII), but independent of the concentration of ferricyanide. Within a limited concentration range of hydroxyl ion [ [OH-1] < 0.25 M] the rate varies directly as the [OH⁻]. Effects of SO4 -2, ΝO3 -1NO3 -1 and temperature on the rate were studied. ΔΕ, PZ, AS* etc. were evaluated. Mechanism of oxidation of mandelic acid based on the formation of Os (VIII) acid anion complex is suggested.

Key concepts: Ferricyanide, Chemistry, Mandelic acid, Kinetics, Ion, Inorganic chemistry, Potassium ferricyanide, Nuclear chemistry

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Kinetics and Mechanism of Os(VIII) Catalysed Oxidation of Mandelate Ion by Alkaline Ferricyanide — Research Paper | ScholarLens