Abstract: The kinetics of oxidation of tetrahydrofurfuryl alcohol by diperiodatoargenate(Ⅲ) complex ion was studied spetrophotometrically in alkaline medium in a temperature range of 27-42 ℃. The reaction rate showed the first order dependance both in oxidant and tetrahydrofurfuryl alcohol. It was found that the pseudo first order ([THFA]》[Ag(Ⅲ)]) rate constant, k obs, increases with the increase in [OH^-] and decrease with the increase in [IO₄^-]_ex. Aweak positive ionic strength effect was observed. No free radical was detected. Amechanism of an inner-sphere two-election transfer reaction involving a preequilibrium is proposed. The rate equation derived from the mechanism can be used to explain all the experimental observations. The preequilibrium constants and rate constants of the rate-determining step along with the activation parameters were evaluated.

Key words: Diperiodatoargenate(Ⅲ), Tetrahydrofurfuryl alcohol, Redox reaction, Kinetics and Mechanism