Kinetics of electrode processes. XII. Currents due to electrode reactions at the dropping mercury electrode preceded by consecutive reactions in solution

1954 ◽  
Vol 19 (6) ◽  
pp. 1093-1098 ◽  
Author(s):  
J. Koutecký
Keyword(s):  
Mercury Electrode ◽  
Electrode Processes ◽  
Electrode Reactions ◽  
Consecutive Reactions ◽  
Dropping Mercury Electrode ◽  
Kinetics Of

Analysis of the Electrode Kinetics of Ni(II) Reduction in Thiocyanate Media on the Dropping Mercury Electrode

2000 ◽  
Vol 65 (3) ◽  
pp. 326-342
Author(s):  
María S. Crespo-Pinilla ◽  
Fernando Mata-Pérez ◽  
Rosa M. Villamañán
Keyword(s):  
Ionic Strength ◽  
Compensation Effect ◽  
Supporting Electrolyte ◽  
Mercury Electrode ◽  
Electrode Kinetics ◽  
Surface Process ◽  
Experimental Conditions ◽  
Dropping Mercury Electrode ◽  
Kinetics Of

A study of two prewaves of the Ni(II)-SCN- system was carried out under the experimental conditions when the influence of electroreduction of SCN- is negligible. Kinetics of Ni(II) reduction in thiocyanate media on the dropping mercury electrode was studied by DC Tast Polarography (DCTP) via determination of Koutecký's parameter χ; the influence of different variables was analyzed. The study of prewaves was performed using various polarographic techniques. Values of χ depend on the SCN- concentration, pH, ionic strength (Ψ-effect) and on the nature of the supporting electrolyte. The number of electrons n, the transfer coefficient α, the stoichiometric number ν, ∆H≠, and ∆S≠ were determined (compensation effect). The first prewave has character of a reaction in the solution, the second prewave is a surface process. Main features of both mechanisms are common: catalytic nature, one-electron step discharge and the rate-determining process between species of opposite charges.

Kinetics of reduction of palladium(II) complexes with ethylamine on a dropping-mercury electrode

2006 ◽  
Vol 42 (6) ◽  
pp. 632-637
Author(s):  
V. N. Spiridonov ◽  
R. K. Astakhova ◽  
S. R. Balushkina ◽  
V. I. Kravtsov
Keyword(s):  
Mercury Electrode ◽  
Dropping Mercury Electrode ◽  
Kinetics Of ◽  
Kinetics Of Reduction
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