Kinetics and Mechanism of Osmium( VIII)-catalysed Oxidation of Selenium( IV) by Periodate

Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, Visakhapatnam-530 003 Manuscript received 18 September 1989, revised 7 February 1990, accepted 28 February 1990 The reactioo is first order in oxidant and catalyst and zero order in substrate. The rate decreases with increase in [OH-] and increases with increase in ionic strength. Ea and \(\bigtriangleup\)S\(\mp\) are fouod to be 47.9��0.5kJ mol-1 and-33.0��1 8 JK-1 mol-1 respectively. A suitable mechanism is proposed.

Keywords

Selenium, Catalysed, Osmium

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