Ion association and condensation in primitive models of electrolyte solutions

1999 ◽  
Vol 111 (19) ◽  
pp. 9000-9008 ◽  
Author(s):  
Philip J. Camp ◽  
G. N. Patey
Keyword(s):  
Ion Association ◽  
Electrolyte Solutions

What can be learnt from dielectric relaxation spectroscopy about ion solvation and association?

2008 ◽  
Vol 80 (6) ◽  
pp. 1239-1252 ◽  
Author(s):  
Richard Buchner
Keyword(s):  
Dielectric Relaxation ◽  
Ion Association ◽  
Electrolyte Solutions ◽  
Ion Solvation ◽  
Dielectric Relaxation Spectroscopy ◽  
Major Focus ◽  
Solvent Interactions ◽  
Solution Studies ◽  
Key Features ◽  
Thermodynamics And Dynamics

Ion solvation and ion association are key features of ion-solvent interactions, and their balance largely determines structure, thermodynamics, and dynamics of electrolyte solutions. Despite being studied for many years with various techniques, these effects are still intriguing because too often results obtained with different methods-each having its individual merits and limitations-cannot be connected properly due to lacking information. In this contribution, we would like to bring dielectric relaxation spectroscopy (DRS) as a further tool for solution studies to the attention of the audience. The principles of DRS and the required instrumentation are briefly introduced. The major focus will be on the kind of results obtained with this technique regarding ion solvation and association and how this information compares with results obtained from other techniques.

Modeling of the thermodynamics of electrolyte solutions to high temperatures including ion association: application to hydrochloric acid

1990 ◽  
Vol 94 (19) ◽  
pp. 7675-7681 ◽  
Author(s):  
J. M. Simonson ◽  
H. F. Holmes ◽  
R. H. Busey ◽  
R. E. Mesmer ◽  
D. G. Archer ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
High Temperatures ◽  
Ion Association ◽  
Electrolyte Solutions

scholarly journals An Equation for Computing Thermal Capacity of an Electrolyte in a Dissociated Solution

2019 ◽  
pp. 77-87
Author(s):  
T.E. Akhapkina ◽  
A.A. Gurov ◽  
S.N. Solovev ◽  
S.V. Kozhevnikova
Keyword(s):  
Ion Pairs ◽  
Ion Association ◽  
Electrolyte Solutions ◽  
Thermal Capacity ◽  
Solution Properties ◽  
Association Model

The authors used E.M. Kuznetsova's theory to derive an equation for computing thermal capacity of an electrolyte in a dissociated solution. This equation may also be used to determine such important characteristics as the constant and enthalpy of ion association in electrolyte solutions. This equation is derived from the simplest model, that of ion association, which allows certain solution properties to be adequately described as functions of concentration. The ion association model is based on the equilibrium between ions and ion pairs of the same kind that exists in electrolyte solutions

scholarly journals Dielectric relaxation spectroscopy: an old-but-new technique for the investigation of electrolyte solutions

2020 ◽  
Vol 92 (10) ◽  
pp. 1595-1609 ◽  
Author(s):  
Glenn Hefter ◽  
Richard Buchner
Keyword(s):  
Dielectric Relaxation ◽  
Ion Pairs ◽  
Hydrophobic Hydration ◽  
Ion Association ◽  
Electrolyte Solutions ◽  
Dielectric Constants ◽  
Spectroscopic Techniques ◽  
Dielectric Relaxation Spectroscopy ◽  
Low Dielectric ◽  
Unique Ability

AbstractThe use of dielectric relaxation spectroscopy (DRS) for studying electrolyte solutions is reviewed, focussing on the authors’ investigations over the last three decades. It is shown that this often-overlooked technique provides powerful insights into the nature of ion-ion and ion-solvent interactions. DRS is revealed to be particularly useful for detection of weak ion association and, due to its unique ability to detect solvent-separated species, the quantitation of ion pairing. It is demonstrated that DRS correctly determines chemical speciation for ion-paired systems where major spectroscopic techniques (NMR, Raman, UV-vis) fail. DRS also provides important insights into ion solvation. In aqueous solutions, it has been used to build up a coherent set of ‘effective’ hydration numbers for ions based on the dynamics of proximate water molecules, and has a unique ability to detect ‘slow’ water resulting from hydrophilic and hydrophobic hydration of solutes. DRS has been especially useful for characterising the behaviour of ionic liquids (ILs), e.g. showing they possess rather low dielectric constants and, surprisingly, contain no significant concentrations of ion pairs. Neat ILs and their mixtures with molecular solvents are shown by ultra-broadband DRS to exhibit extremely complicated behaviour especially at frequencies in the THz region.

Ion association and hydration in 3:2 electrolyte solutions by dielectric spectroscopy: Aluminum sulfate

2007 ◽  
Vol 71 (22) ◽  
pp. 5287-5300 ◽  
Author(s):  
Simon Schrödle ◽  
Wolfram W. Rudolph ◽  
Glenn Hefter ◽  
Richard Buchner
Keyword(s):  
Dielectric Spectroscopy ◽  
Aluminum Sulfate ◽  
Ion Association ◽  
Electrolyte Solutions

Cluster approach to ion association reactions in electrolyte solutions

1984 ◽  
Vol 88 (2) ◽  
pp. 333-338 ◽  
Author(s):  
G. Ciccotti ◽  
P. Turq ◽  
F. Lantelme
Keyword(s):  
Ion Association ◽  
Electrolyte Solutions ◽  
Cluster Approach
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