Kinetics and Mechanism of Oxidation of Selenium(IV) by Ditelluratoargentate(III)

Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, Visakhapatnam-530 003

Manuscript received 22 April 1991, revised 27 August 1991 accepted 5 March 1992

The title oxidation is first order each in oxidant, selenium(IV) and alakli and inverse first order in tellurium(VI). The rate of the reaction increases with increase in ionic strength. Ea and ΔS≠ values at 40° are found to be 23.3 ± 1.5 KJ mol^-1 and 12.6 ± 4.8 JK^-1 mol-¹ respectively. A suitable mechanism is proposed.