243446-12-0Relevant academic research and scientific papers
Kinetics and mechanism of the hexecyanomanganate(IV)-arsenic(III) redox reaction in acidic medium
Lopez-Cueto, Guillermo,Ubide, Carlos
, p. 2855 - 2859 (2007/10/02)
The reaction between hexacyanomanganate(IV) and arsenic(III), in acidic media, proceeds with a stoichiometry Δ/Δ = 1.The reaction in sulfuric acid media has been followed spectrophotometrically at 387 nm, where the Mn(IV) cyanide complex has an absorption maximum, and shows a first-order dependence on the hexacyanomanganate(IV) concentration, viz., -d/dt = k, the value of k being dependent on the acidity and the arsenic(III) concentration.At As(III), 0.1 M; H+, 0.16 M; ionic strength, 2.0; and T, 30 deg C, the value of the rate constant was found to be k = (1.04 +/- 0.06) x 10-5 s-1.The proposed mechanism, throgh three parallel pathways, explains satisfactorily the experimental results observed.
