Improved method for measuring the double layer capacity at a dropping mercury electrode. Application to measurements at high pressure

1965 ◽  
Vol 61 ◽  
pp. 316 ◽  
Author(s):  
G. J. Hills ◽  
R. Payne
Keyword(s):  
High Pressure ◽  
Double Layer ◽  
Mercury Electrode ◽  
Improved Method ◽  
Double Layer Capacity ◽  
Dropping Mercury Electrode

The Influence of N,N'-Dialkylthioureas on the Two-Step Electroreduction of Zn(II) Ions

1998 ◽  
Vol 63 (6) ◽  
pp. 749-760 ◽  
Author(s):  
Grażyna Dalmata
Keyword(s):  
Electron Transfer ◽  
Double Layer ◽  
Rate Constant ◽  
Electrode Surface ◽  
Mercury Electrode ◽  
Impedance Method ◽  
Dropping Mercury Electrode ◽  
Wide Potential ◽  
Orientation Of Molecules

A two-step reduction of Zn(II) ions at the dropping mercury electrode in 1 M NaClO4/0.001 M HClO4 in the presence of N,N'-dialkylthioureas was examined in wide potential and frequency ranges, using the impedance method. The rate constant of the first electron transfer increases with increasing concentration of N,N'-dialkylthioureas, whereas that of the second electron transfer depends largely on the double layer effects, particularly, on the orientation of molecules on the electrode surface.

Differential capacity of the mercury electrode in dilute 1,1-valent electrolytes

1982 ◽  
Vol 47 (1) ◽  
pp. 190-195
Author(s):  
Valerii Kozlov ◽  
Valentina Vilinskaya ◽  
Gurami Tedoradze
Keyword(s):  
Double Layer ◽  
Mercury Electrode ◽  
Electrolyte Solutions ◽  
Differential Capacity ◽  
Double Layer Capacity

The double layer capacity has been measured in dilute 1,1-valent electrolyte solutions (HCl, KCl, NaF) at infrasonic frequencies. The results obtained confirm the validity of the Gouy-Chapman theory for electrolyte solutions in the concentration range 10-3 - 10-5 mol/dm3.

Reduction of the Ni(II) ion at the dropping mercury electrode from amoxicillin water solution

1991 ◽  
Vol 56 (1) ◽  
pp. 152-156 ◽  
Author(s):  
Milenko R. Erceg ◽  
Vera P. Kapetanović ◽  
Desanka Ž. Sužnjević
Keyword(s):  
Complex Formation ◽  
Double Layer ◽  
Rate Constant ◽  
Electrical Double Layer ◽  
Water Solution ◽  
Mercury Electrode ◽  
Reduction Mechanism ◽  
Dropping Mercury Electrode ◽  
Heterogenous Reaction

The nature of polarographic precurrents of Ni(II) ion in the presence of amoxicillin as well as the behaviour of amoxicillin in the electrical double layer has been investigated. It has been established the formation of the mono complex of Ni(II) ion with amoxicillin adsorbed at the mercury. The reduction mechanism of the complex has been proposed. Taking into account the effect of the double layer on the kinetics, the rate constant of the heterogenous reaction of the complex formation has been found to be 5.8 · 103 l mol-1 s -1.

The Electroreduction of Periodate Anion in Alkaline Media

1971 ◽  
Vol 49 (16) ◽  
pp. 2657-2663 ◽  
Author(s):  
W. R. Fawcett ◽  
Y. C. Kuo Lee
Keyword(s):  
Ionic Strength ◽  
Aqueous Solutions ◽  
Double Layer ◽  
Mercury Electrode ◽  
Electrode Reaction ◽  
Alkaline Media ◽  
Dropping Mercury Electrode ◽  
Ph Range ◽  
Theoretical Developments

The electroreduction of periodate anion was studied at a dropping mercury electrode in aqueous solutions in the pH range 11–13.3 where the process is markedly affected by the double layer. The electrode reaction was found to be complex, its mechanism depending on both pH and ionic strength. The effects of the double layer on the component reactions are discussed with respect to current theoretical developments.

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