Thermodynamics of ionic hydration: application of scaled particle theory to partial molar volumes and entropies of aqueous cations at 25.degree.C

1989 ◽  
Vol 93 (14) ◽  
pp. 5588-5595 ◽  
Author(s):  
Leslie Barta ◽  
Loren G. Hepler
Keyword(s):  
Partial Molar Volumes ◽  
Scaled Particle Theory ◽  
Particle Theory ◽  
Molar Volumes ◽  
Ionic Hydration

A partial-molar volume study of electrolytes in propylene carbonate-based lithium battery electrolyte solutions at 298.15 K

2002 ◽  
Vol 80 (7) ◽  
pp. 753-760 ◽  
Author(s):  
Jianji Wang ◽  
Yang Zhao ◽  
Kelei Zhuo ◽  
Ruisen Lin
Keyword(s):  
Molar Volume ◽  
Propylene Carbonate ◽  
Partial Molar Volume ◽  
Lithium Battery ◽  
Preferential Solvation ◽  
Partial Molar Volumes ◽  
Scaled Particle Theory ◽  
Solvent Mixtures ◽  
Particle Theory ◽  
Molar Volumes

Apparent molar volumes (V2, ϕ ) and standard partial-molar volumes (V20, ϕ ) of LiClO4 and LiBr at 298.15 K have been determined from precise density measurements in solvent mixtures of propylene carbonate (PC) with dimethylformamide (DMF), tetrahydrofuran (THF), acetonitrile (AN), and methyl formate (MF). The scaled particle theory is used to calculate the contributions of the cavity formation and the electrolyte-solvent interactions to the standard partial-molar volumes. It is shown that V20, ϕ is strongly dependent on the nature of the solvents, and the trends in V20, ϕ with composition of the solvent mixtures are determined by the interaction volumes of electrolytes with solvents. The results are discussed in terms of ionic preferential solvation, packing effect of solvents in the solvation shell, and electrostriction of solvents by ion.Key words: partial-molar volume, scaled particle theory, lithium salts, propylene carbonate, solvent mixtures, lithium battery electrolytes.

Solubility of nonpolar gases in 2,2,2-trifluoroethanol and 1,1,1,3,3,3-hexafluoropropan-2-ol at several temperatures and 101.33 kPa partial pressure of gas

2001 ◽  
Vol 79 (10) ◽  
pp. 1460-1465 ◽  
Author(s):  
Miguel Angel Sánchez ◽  
Ana María Mainar ◽  
Juan Ignacio Pardo ◽  
María Carmen López ◽  
José Santiago Urieta
Keyword(s):  
Partial Pressure ◽  
Thermodynamic Functions ◽  
Partial Molar Volumes ◽  
Scaled Particle Theory ◽  
Particle Theory ◽  
Molar Volumes ◽  
Gas Solubilities ◽  
Enthalpy And Entropy ◽  
Solubility Of Nonpolar Gases

Solubilities, expressed as mol fractions, of 14 nonpolar gases (He, Ne, Ar, Kr, Xe, H2, N2, O2, CH4, C2H4, C2H6, CO2, CF4, and SF6) in 2,2,2-trifluoroethanol (TFE) at 268.15 and 283.15 K and 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) at 273.15 and 283.15 K, with the partial pressure of gas being 101.33 kPa for all measurements, are reported. Standard changes in the thermodynamic functions (enthalpy and entropy) have been calculated from the solubilities and their variation with temperature. The Scaled Particle Theory (SPT) model has been used to determine these thermodynamic functions and also the partial molar volumes of the gases in the formed solutions.Key words: gas solubilities, nonpolar gases, fluoroalcohols, Scaled Particle Theory.

scholarly journals Limiting Partial Molar Volumes (V∞23) in Solvent (1) − [Solute (2) + Solute (3)] Systems and the Effects of Ionic Hydration on V∞23

2019 ◽  
Vol 48 (5) ◽  
pp. 611-623
Author(s):  
Isamu Inamura ◽  
Yuji Jinbo ◽  
Kentaro Inamura ◽  
Akihisa Ohta ◽  
Tatsuo Saiko
Keyword(s):  
Partial Molar Volumes ◽  
Molar Volumes ◽  
Ionic Hydration

Volumetric studies of ion solvation in propylene carbonate + N,N-dimethylformamide electrolyte solutions

2003 ◽  
Vol 81 (4) ◽  
pp. 307-314 ◽  
Author(s):  
Yang Zhao ◽  
Jianji Wang ◽  
Xiaopeng Xuan ◽  
Ruisen Lin
Keyword(s):  
Propylene Carbonate ◽  
Tetrabutylammonium Bromide ◽  
Partial Molar Volumes ◽  
Lewis Base ◽  
Ion Solvation ◽  
Scaled Particle Theory ◽  
Solvent Mixtures ◽  
Tetraethylammonium Bromide ◽  
Molar Volumes ◽  
Tetraalkylammonium Cations

Apparent molar volumes V2,ϕ and standard partial molar volumes V°2,ϕ for tetraethylammonium bromide (Et4NBr), tetrapropylammonium bromide (Pr4NBr), tetrabutylammonium bromide (Bu4NBr), and tetrahexylammonium bromide (Hex4NBr) have been determined at 298.15 K from precise density measurements in solvent mixtures of propylene carbonate (PC) with N,N-dimethylformamide (DMF). Combined with our previous data for LiClO4 and LiBr in the same solvents, ionic molar volumes of Li+, Et4N+, Pr4N+, Bu4N+, Hex4N+, and related anions have been deduced from the extrapolation method suggested by Conway and co-workers. It is shown that the molar volumes of these cations are quite independent of the nature of the solvent and the composition of the solvent mixtures, in contrast to those of ClO4– and Br– anions. This suggests that the Lewis-base-type solvents with similar molecular volumes have similar interactions with Li+. The constancy in partial molar volume for tetraalkylammonium ions provides helpful evidence for the lack of solvation of large tetraalkylammonium cations in organic solvents. These findings have been interpreted using scaled-particle theory. The results are discussed in terms of ion solvation, packing effects of solvent molecules in the solvation shell, and the electrostriction of solvents.Key words: ionic volumes, propylene carbonate, N,N-dimethylformamide, solvent mixtures, solvation, lithium batteries.

Partial Molar Volumes of Some Multicharged Electrolytes in Aqueous Dimethylformamide at Various Temperatures

1998 ◽  
Vol 63 (4) ◽  
pp. 507-514
Author(s):  
Madan L. Parmar ◽  
Ch. V. Nageshwara Rao ◽  
Suresh Chand Attri
Keyword(s):  
Partial Molar Volumes ◽  
Water Systems ◽  
Molar Volumes ◽  
Density Measurements ◽  
Solution Density ◽  
Aluminium Sulfate ◽  
Ion Interactions

Partial molar volumes of ammonium aluminium sulfate and potassium aluminium sulfate in DMF-water mixtures (5-20 wt.% of DMF) have been determined from solution density measurements at various temperatures and electrolyte concentrations. The data were evaluated by using Masson equation and the obtained parameters were interpreted in terms of ion-solvent and ion-ion interactions. Both electrolytes have been found to act as the structure makers/promotors in DMF-water systems.

On the calculation of partial molar volumes at infinite dilution from experimental density data

2020 ◽  
pp. 1-7
Author(s):  
Jorge Álvarez Juliá ◽  
María Del Carmen Grande ◽  
Carmen Raquel Barrero ◽  
Carlos Miguel Marschoff
Keyword(s):  
Infinite Dilution ◽  
Partial Molar Volumes ◽  
Density Data ◽  
Molar Volumes ◽  
Experimental Density
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