ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Polarographic study of kinetics of reduction of bromates by thiocyanates

Ľ. Treindl and L. Kostrová

Komenský University, Bratislava

Abstract: Kinetics of the redn. of NaBrO₃ with NaSCN in HCl by the recording of the polarog. wave of NaBrO₃ in relation to time was studied. The measured rate const. of the redn. of NaBrO₃ increases linearly with the increasing concn. of NaSCN in the range 10^-3M to 4 × 10^-2M, and with the increasing concn. of HCl, it increases linearly with the square of concn. of H⁺. From the relation of the temp. to the rate const. the activation energy ΔH = 11.4 kcal./mol and the activation entropy ΔS = 28.01 cal./g. mole was detd. The rate defining the degree of the reaction is the decompn. of the intermediate compd. BrO₂.SCN.

Full paper in Portable Document Format: 191a34.pdf (in Slovak)

Chemical Papers 19 (1) 34–40 (1965)