Stabilité des complexes hydroxo et produits de solubilité des hydroxydes de métaux. I. Argent et zinc

1967 ◽  
Vol 45 (8) ◽  
pp. 827-832 ◽  
Author(s):  
A. O. Gubeli ◽  
J. Ste-Marie
Keyword(s):  
Ionic Strength ◽  
Formation Constants ◽  
Hydroxo Complexes ◽  
Solubility Products

The hydroxo-complexes of silver and zinc are determined from a plot of their hydroxide solubility curves vs. pH, at 25 °C and unit ionic strength (NaClO4). The hydroxide solubility products and the formation constants of AgOH, Ag(OH)2−, ZnOH+, Zn(OH)2, Zn(OH)3−, and Zn(OH)42− are calculated.

Formation et stabilité de complexes hydroxo–ammonio en solution aqueuse. I. Complexes de zinc

1968 ◽  
Vol 46 (10) ◽  
pp. 1707-1714 ◽  
Author(s):  
A. O. Gubeli ◽  
J. Ste-Marie
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Formation Constants ◽  
New Method ◽  
Hydroxo Complexes ◽  
Solution Aqueuse

A new method has been developed for the calculation of the formation constants of complexes in equilibrium with a precipitate in aqueous solution. This has been applied to the study of ammonio and ammonio–hydroxo complexes of zinc in the presence of the hydroxide. The curves of solubility vs. pH and pNH3 tot have been established by means of 65Zn at 25 °C and ionic strength 1.0 with NaClO4.

Ionic-strength dependence of formation constants—XII A model for the effect of background on the protonation constants of amines and amino-acids

Talanta ◽  
1989 ◽  
Vol 36 (9) ◽  
pp. 903-907 ◽  
Author(s):  
A CASALE ◽  
C DESTEFANO ◽  
S SAMMARTANO ◽  
P DANIELE
Keyword(s):  
Amino Acids ◽  
Ionic Strength ◽  
Formation Constants ◽  
Protonation Constants ◽  
Ionic Strength Dependence ◽  
Strength Dependence

scholarly journals Precipitation and Hydrolysis of Thorium in Aqueous Solution. VI. Determination of Formation Constants for Mixed Thorium-Maleate-Hydroxo Complexes and Characterization of Solids.

1985 ◽  
Vol 39a ◽  
pp. 317-325 ◽  
Author(s):  
Halka Bilinski ◽  
Staffan Sjöberg ◽  
Sanja Kežić ◽  
Nevenka Brničević ◽  
Francesco Salvatore
Keyword(s):  
Aqueous Solution ◽  
Formation Constants ◽  
Hydroxo Complexes ◽  
Hydrolysis Of

Formation constants of the tetrazido cuprate(II) and triazido cuprate(I) ions in sodium azide solutions of ionic strength 4·0

1972 ◽  
Vol 34 (6) ◽  
pp. 1923-1927 ◽  
Author(s):  
Paschoal Senise ◽  
Eduardo F. de Almeida Neves
Keyword(s):  
Ionic Strength ◽  
Sodium Azide ◽  
Formation Constants

Ionization of Water in Concentrated Potassium Halide Media

2000 ◽  
Vol 53 (5) ◽  
pp. 369 ◽  
Author(s):  
Faradj K. Samani ◽  
Stephen G. Capewell ◽  
Pal M. Sipos ◽  
Peter M. May ◽  
Glenn Hefter
Keyword(s):  
Ionic Strength ◽  
Aqueous Solutions ◽  
High Precision ◽  
Excellent Agreement ◽  
Ion Pairs ◽  
Formation Constants ◽  
Glass Electrode ◽  
Ionic Product ◽  
Ionization Of Water ◽  
Potassium Halide

The ionic product of water, pKw = –log[H+][OH–], has been determined as a function of ionic strength (I ) in concentrated aqueous solutions of KCl, KBr and KI at 25˚C by high-precision glass electrode potentiometric titrations. The pKw values obtained are in excellent agreement with, but generally more precise than, literature data. At I > 1 M the pKw values increase smoothly and show systematic differences in the order KCl < KBr < KI, consistent with the decreasing H+-acceptor ability of the medium anions. Analogous behaviour is observed in MCl solutions, with pKw values varying in the order NaCl < KCl < CsCl. Formation constants of MOH0 ion pairs derived from these data are consistent with literature values.

Stabilities of Vanadyl Complexes with Methionine, Phenylalanine, and Threonine

1974 ◽  
Vol 29 (7-8) ◽  
pp. 336-338
Author(s):  
B.S. Sekhon ◽  
S.L. Chopra
Keyword(s):  
Free Energy ◽  
Ionic Strength ◽  
Stability Constants ◽  
Thermodynamic Stability ◽  
Chloride Solution ◽  
Formation Constants ◽  
Potassium Chloride Solution ◽  
Vanadyl Complexes ◽  
Overall Stability ◽  
Stepwise Formation

Abstract Stepwise formation constants corresponding to 1:1 vanadyl complexes with methionine, phenylalanine and threonine have been determined at 25 °C, and at various ionic concentrations, viz. 0.01, 0.1 and 0.3 ᴍ , maintained by the addition of potassium chloride solution. Thermodynamic stability constants have been obtained by extrapolation of log K values to zero ionic strength. Logarithms of the overall stability constants (log K (u = 0)) are 7.72 for methionine, 7.70 for phenyl­alanine and 7.44 for threonine complexes. The corresponding free energy changes (⊿G0) are - 10.53, - 10.51, - 10.15 kcal-mol-1 respectively.

Complex formation and solubility of Pu(IV) with malonic and succinic acids

2009 ◽  
Vol 97 (4-5) ◽  
Author(s):  
Takayuki Sasaki ◽  
Taishi Kobayashi ◽  
I. Takagi ◽  
Hirotake Moriyama ◽  
A. Fujiwara ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Solvent Extraction ◽  
Complex Formation ◽  
Extraction Method ◽  
Formation Constants ◽  
Complex Formation Constants ◽  
Solvent Extraction Method ◽  
Experimental Solubility Data ◽  
Experimental Solubility ◽  
Solubility Products

AbstractThe complex formation constants of tetravalent plutonium ion with malonic and succinic acids in aqueous solution were determined by the solvent-extraction method. Also, by taking the known values of the solubility products, the hydrolysis constants and the formation constants, the experimental solubility data of plutonium in the presence of carboxylates were analyzed.

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