The dependence on ionic strength of protonation constants of carboxylic acids in aqueous tetraethylammonium iodide solution, at different temperatures

1998 ◽  
Vol 149 (1-2) ◽  
pp. 91-101 ◽  
Author(s):  
Claudia Foti ◽  
Silvio Sammartano ◽  
Graziella Signorino
Keyword(s):  
Ionic Strength ◽  
Carboxylic Acids ◽  
Protonation Constants ◽  
Different Temperatures ◽  
Dependence On Ionic Strength ◽  
Iodide Solution ◽  
Tetraethylammonium Iodide

Ionic strength dependence of formation constants. Part 7. Protonation constants of low molecular weight carboxylic acids at 10, 25 and 45°C

1985 ◽  
Vol 86 ◽  
pp. 273-280 ◽  
Author(s):  
Santi Capone ◽  
Alessandro de Robertis ◽  
Concetta de Stefano ◽  
Silvio Sammartano ◽  
Rosario Scarcella ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Ionic Strength ◽  
Carboxylic Acids ◽  
Formation Constants ◽  
Protonation Constants ◽  
Low Molecular Weight ◽  
Ionic Strength Dependence ◽  
Strength Dependence

Studies on the Coordination Reaction of VO2+ and Tannic Acid in the Tannin Extract Desulfurization

2012 ◽  
Vol 239-240 ◽  
pp. 1573-1576
Author(s):  
Zhu Qing Gao ◽  
Xiao Dong Cai ◽  
Kai Cheng Ling
Keyword(s):  
Stability Constants ◽  
Tannic Acid ◽  
Ph Value ◽  
Protonation Constants ◽  
Conditional Stability ◽  
Tannin Extract ◽  
Acid Effect ◽  
Different Temperatures ◽  
The Stability ◽  
Apparent Stability

At different temperatures, the protonation constants of tannic acid and the complex apparent stability constants between tannic acid and VO2+ were determined by using pH potentimetric method. The results showed that the protonation constants and the complex apparent stability constants slightly decreased with the raising temperature. In accordance with the pH value in the tannin extract technology, the conditional stability constants of the complex were calculated on the basis of the acid effect of tannic acid and the hydrolysis effect of VO2+. It was found that pH greatly affected the stability constants of the complex , so pH must be strictly controlled in the tannin extract technology.

Ionic Strength Dependence of Protonation Constants ofN-Alkyl Substituted Open Chain Diamines in NaClaq

2004 ◽  
Vol 49 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Francesco Crea ◽  
Concetta De Stefano ◽  
Ottavia Giuffrè ◽  
Silvio Sammartano
Keyword(s):  
Ionic Strength ◽  
Protonation Constants ◽  
Ionic Strength Dependence ◽  
Open Chain ◽  
Strength Dependence

Thermodynamic parameters for the protonation of carboxylic acids in aqueous tetraethylammonium iodide solutions

1990 ◽  
Vol 19 (6) ◽  
pp. 569-587 ◽  
Author(s):  
Alessandro De Robertis ◽  
Concetta De Stefano ◽  
Carmelo Rigano ◽  
Silvio Sammartano
Keyword(s):  
Thermodynamic Parameters ◽  
Carboxylic Acids ◽  
Tetraethylammonium Iodide
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