scholarly journals Study of Acidity Constants of 3-, 4-, 5-, and 6-Chloro-o-toluidinium Ions in Aqueous Solution and Related Thermodynamic Quantities. I

1971 ◽  
Vol 44 (2) ◽  
pp. 455-459 ◽  
Author(s):  
A. H. Gandhi ◽  
S. R. Patel
Keyword(s):  
Aqueous Solution ◽  
Thermodynamic Quantities ◽  
Acidity Constants

Thermodynamic quantities for the interaction of SO 4 2? with H+ and Na+ in aqueous solution from 150 to 320�C

1988 ◽  
Vol 17 (9) ◽  
pp. 841-863 ◽  
Author(s):  
J. L. Oscarson ◽  
R. M. Izatt ◽  
P. R. Brown ◽  
Z. Pawlak ◽  
S. E. Gillespie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Thermodynamic Quantities

Inerte Amminkomplexe als mehrwertige Kationsäuren in wäßriger Lösung / Inert Ammine Complexes as Multivalent Cationic Acids in Aqueous Solution

1980 ◽  
Vol 35 (9) ◽  
pp. 1096-1103 ◽  
Author(s):  
Matthias Kretschmer ◽  
Lutwin Labouvie ◽  
Karl-W. Quirin ◽  
Helmut Wiehn ◽  
Ludwig Heck
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Spectrophotometric Method ◽  
Complex Cation ◽  
Aqua Ligand ◽  
Second Step ◽  
Acidity Constants ◽  
Ammine Complexes ◽  
Temperature Variations ◽  
Enthalpy Changes

Acidity constants of ammine complexes of tetravalent platinum in aqueous solutions have been determined by a spectrophotometric method at very low ionic strengths and extrapolated to zero ionic strength. Temperature variations of pK-values (25 °C and 50 °C) yield thermodynamic parameters for two successive deprotonation steps of hexaammineplatinum(IV), pentaamminechloroplatinum(IV), and tris(ethylenediamine)pla- tinum(IV) complexes and for the deprotonation of pentaammineaquacobalt(III) ion.The enthalpy changes for the first and second steps are similar and range from 50 to 75 kJ/mole while for the aqua ligand of Co(III) 33 kJ/mole are found. The very large dif­ference in the entropy changes (about 70 to 80 J/K mole for the first step and -10 to + 20 J/K mole for the second step) is interpreted by a model of solvation change. The primary hydration sphere of strongly oriented and immobilized water dipoles around the highly charged complex cation is transformed to a hydrogen-bonded solvation sheath when the electric field of the complex is weakened upon release of the first proton.

Thermodynamic quantities for the ionization of nitric acid in aqueous solution from 250 to 319�C

1992 ◽  
Vol 21 (8) ◽  
pp. 789-801 ◽  
Author(s):  
J. L. Oscarson ◽  
S. E. Gillespie ◽  
R. M. Izatt ◽  
X. Chen ◽  
C. Pando
Keyword(s):  
Aqueous Solution ◽  
Nitric Acid ◽  
Thermodynamic Quantities

Prediction of acidity constants of some important selenium oxoacids in aqueous solution by computational techniques

RSC Advances ◽  
2014 ◽  
Vol 4 (10) ◽  
pp. 5206 ◽  
Author(s):  
Mostafa Abedi ◽  
Hossein Farrokhpour ◽  
Solaleh Farnia
Keyword(s):  
Aqueous Solution ◽  
Computational Techniques ◽  
Acidity Constants

Coordinating Properties of Aromatic and Aliphatic Sulfur with Bivalent Metals in Aqueous Solution. A Calorimetric Study

1979 ◽  
Vol 32 (4) ◽  
pp. 709 ◽  
Author(s):  
R Aruga
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Complex Formation ◽  
Aqueous Medium ◽  
Formation Constants ◽  
Calorimetric Study ◽  
Thermodynamic Quantities ◽  
Direct Calorimetry ◽  
Bivalent Metals

Heats and entropies of complex formation of the thiophen-2-carboxylate ion with Ni2+, Cu2+, Zn2+ and Cd2+ have been determined by direct calorimetry, the formation constants being known from the literature. The measurements were carried out in aqueous medium at 25�C and an ionic strength of 1. The values of the thermodynamic quantities for thiophen-2-carboxylate, compared with those for (ethylthio)acetate and (phenylthio)acetate obtained previously, indicate a greater tendency for aromatic sulfur to form bonds with the above metals than for aliphatic sulfur. The causes of this behaviour are discussed.

Thermodynamic quantities for the interaction of H+ and Na+ with C2H3O 2 ? and Cl? in aqueous solution from 275 to 320�C

1988 ◽  
Vol 17 (9) ◽  
pp. 865-885 ◽  
Author(s):  
J. L. Oscarson ◽  
S. E. Gillespie ◽  
J. J. Christensen ◽  
R. M. Izatt ◽  
P. R. Brown
Keyword(s):  
Aqueous Solution ◽  
Thermodynamic Quantities

Raman spectroscopic determination of the acidity constants of salicylaldoxime in aqueous solution

2011 ◽  
Vol 42 (3) ◽  
pp. 505-511 ◽  
Author(s):  
M. A. Elbagerma ◽  
H. G. M. Edwards ◽  
Gholamhassan Azimi ◽  
I. J. Scowen
Keyword(s):  
Aqueous Solution ◽  
Spectroscopic Determination ◽  
Acidity Constants ◽  
Raman Spectroscopic

Determination of acidity constants of curcumin in aqueous solution and apparent rate constant of its decomposition

2004 ◽  
Vol 60 (5) ◽  
pp. 1091-1097 ◽  
Author(s):  
Margarita Bernabé-Pineda ◽  
Marı́a Teresa Ramı́rez-Silva ◽  
Mario Romero-Romo ◽  
Enrique González-Vergara ◽  
Alberto Rojas-Hernández
Keyword(s):  
Aqueous Solution ◽  
Rate Constant ◽  
Apparent Rate Constant ◽  
Acidity Constants

Acidity constants of some sulfur oxoacids in aqueous solution using CCSD and MP2 methods

2013 ◽  
Vol 42 (15) ◽  
pp. 5566 ◽  
Author(s):  
Mostafa Abedi ◽  
Hossein Farrokhpour
Keyword(s):  
Aqueous Solution ◽  
Acidity Constants
Sign in / Sign up

Export Citation Format

Share Document