Thermodynamics ofp-nitroanilinium ion and the acidity function in ethylene carbonate-water mixtures at 25�C

El-Harakany, A. A.; Sadek, H.; Abdou, A.M.

doi:10.1007/bf00649455

Cited by 7 publications

(10 citation statements)

References 7 publications

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“…The change from hydration of the silver ion to selective solvation by DMSO which occurs at a mole fraction of DMSO around 0.2 agrees with electrochemical determinations of the free enthalpy of solvation and with solvent transference number determinations [8]. The partition of the free enthalpy of solvation into a component for the anion and for the cation is only possible with the help of extrathermodynamic assumptions.…”

Section: Berichte Der Bunsen-gesellscharlsupporting

confidence: 78%

“…5). Up to the mole fraction xD-= 0.2 the value of A is practically zero: the solvent transfer by the silver ion is compensated by the sulphate ion, since both ions are hydrated as has also been shown from the study of solubility of Ag,SO, in water and DMSO mixtures [8]. A change in the solvation of the silver ion is indicated by the increase in A with increasing DMSO content and a maximum of A = 8 at xDmO = 0.6 which can only be explained by the heteroselectivity of the Ag,SO, for the components of the solvent in accordance with the results described above.…”

Section: Berichte Der Bunsen-gesellscharlmentioning

confidence: 68%

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Studies of Silver(I) Solvation in Binary Solvent Mixtures Containing Dimethyl Sulphoxide: II. NMR Investigations of the Shift in the Preferential Solvation of Silver Ions from Water to DMSO

Clausen

El-Harakany

Schneider

1973

Ber Bunsenges Phys Chem

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Ag(I) is more strongly solvated in dimethyl sulphoxide than in water. Evidence is presented from NMR and electrochemical work that Ag(I) is preferentially hydrated in dilute aqueous solutions of dimethyl sulphoxide. With increasing concentration of dimethyl sulphoxide the preferential solvation of Ag(I) is shifted from water to dimethyl sulphoxide. This behaviour is related to the characteristic properties of the binary solvent system.

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Section: Berichte Der Bunsen-gesellscharlsupporting

confidence: 78%

Section: Berichte Der Bunsen-gesellscharlmentioning

confidence: 68%

Studies of Silver(I) Solvation in Binary Solvent Mixtures Containing Dimethyl Sulphoxide: II. NMR Investigations of the Shift in the Preferential Solvation of Silver Ions from Water to DMSO

Clausen

El-Harakany

Schneider

1973

Ber Bunsenges Phys Chem

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“…All symbols having their usual meaning. The values of density, F, and the relative permittivity, ε r , for the EC + water mixtures were interpolated from those found in the literature [4][5][6] and appear together with the other constants in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Activity Coefficients of NaCl in Aqueous Mixtures with High Relative Permittivity Cosolvent: Ethylene Carbonate + Water at 298.15 K

Hernández-Luis¹,

Rodríguez-Raposo²,

Galleguillos³

et al. 2010

J. Chem. Eng. Data

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The mean ionic activity coefficients of NaCl were experimentally determined in ethylene carbonate (EC) + water at 298.15 K from potential difference measurements of the following electrochemical cell containing two ion-selective electrodes (ISEs):The molality (m) varied between 0.02 mol • kg -1 and almost saturation, while the mass fraction of EC in the mixture (w) was varied between 0 and 0.8 in 0.1 unit steps. Values of the standard potential difference, E 0 (molal scale), were determined using a routine method of extrapolation together with the extended Debye-Hu ¨ckel, Pitzer, and Scatchard equations. The results obtained produced good internal consistency, within the normal limits of experimental error encountered in these types of measurement. Once E 0 was determined, the mean ionic activity coefficients of the NaCl, the Gibbs energy of transfer of the NaCl from the water to the EC + water mixture, standard solubility product of NaCl in EC + water, and the NaCl primary hydration number were estimated. The results were comparatively analyzed with those of the NaF previously obtained in similar mixtures.

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“…All other symbols have their usual meaning. The values of density, ρ, and the relative permittivity, ε r , for the EC + water mixtures were interpolated from those found in the literature − and appear together with the others constants in Table .…”

Section: Resultsmentioning

confidence: 99%

Activity Coefficients of NaBr in Aqueous Mixtures with High Relative Permittivity Cosolvent: Ethylene Carbonate + Water at 298.15 K

Hernández-Luis¹,

Rodríguez-Raposo²,

Galleguillos³

et al. 2010

J. Chem. Eng. Data

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The mean ionic activity coefficients of NaBr were experimentally determined in ethylene carbonate (EC) + water at 298.15 K from potential difference measurements of the following electrochemical cell containing two ion-selective electrodes (ISEs): Na-ISE | NaBr ( m ) , EC ( w ) , H 2 O ( 1 − w ) | Br-ISE The molality (m) varied between 0.04 mol·kg−1 and almost saturation, while the mass fraction of EC in the mixture (w) was varied between 0 and 0.8 in 0.1 unit steps. Values of the standard potential difference, E 0 (molal scale), were determined using a routine method of extrapolation together with the extended Debye−Hückel, Pitzer−Rard−Archer, and Scatchard equations. The results obtained produced good internal consistency, within the normal limits of experimental error in these types of measurement. Once E 0 was determined, the mean ionic activity coefficients of NaBr (γ), the Gibbs energy of transfer of the NaBr from the water to the EC + water mixture (ΔG t 0), the standard solubility product of NaBr in EC + water (K sp 0), the NaBr primary hydration number (n hyd), Gibbs energy interaction parameters (g EN), and the salting constant (k S) were estimated. The results were comparatively analyzed with those of NaF and NaCl previously obtained in similar mixtures.

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Thermodynamics ofp-nitroanilinium ion and the acidity function in ethylene carbonate-water mixtures at 25�C

Cited by 7 publications

References 7 publications

Studies of Silver(I) Solvation in Binary Solvent Mixtures Containing Dimethyl Sulphoxide: II. NMR Investigations of the Shift in the Preferential Solvation of Silver Ions from Water to DMSO

Studies of Silver(I) Solvation in Binary Solvent Mixtures Containing Dimethyl Sulphoxide: II. NMR Investigations of the Shift in the Preferential Solvation of Silver Ions from Water to DMSO

Activity Coefficients of NaCl in Aqueous Mixtures with High Relative Permittivity Cosolvent: Ethylene Carbonate + Water at 298.15 K

Activity Coefficients of NaBr in Aqueous Mixtures with High Relative Permittivity Cosolvent: Ethylene Carbonate + Water at 298.15 K

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