Ion-solvent interactions in lanthanum(III) chloride and D-glucose-water mixed solvent systems: An ultrasonic study

The study of ion- solvent interaction is of much importance to investigate the nature of different solutions. Measurement of electrical conductivity and evaluation of physico-chemical properties, such as molar conductance, limiting molar conductance, ion-pair association, Walden product etc. shade light on different intermolecular interactions present in electrolyte solutions. Solvation properties can be varied by mixing two or more solvents. An extensive literature survey on conductometric studies has been carried out on different electrolytes dissolved in a wide range of mixed solvent systems. The reported results show that strong solute-solute, solute-solvent and solvent-solvent interactions are responsible for the physico- chemical behavior of a solution in mixed solvents.

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Solute–solvent effects in the dissociation of thymolsulfonephthalein (an uncharged acid) in aqueous mixtures of acetonitrile (ACN), urea, and dimethyl sulfoxide (DMSO)

Canadian Journal of Chemistry ◽

10.1139/v86-249 ◽

1986 ◽

Vol 64 (8) ◽

pp. 1521-1526 ◽

Cited By ~ 7

Author(s):

A. L. De ◽

A. K. Atta

Keyword(s):

Solvent Effect ◽

Dimethyl Sulfoxide ◽

Solvent Effects ◽

Mixed Solvent ◽

Dissociation Constants ◽

Aqueous Mixtures ◽

Solvent Interactions ◽

Gibbs Energies ◽

Gibbs Energies Of Transfer ◽

Solvent Systems

The thermodynamic first dissociation constants, [Formula: see text] of thymolsulfonephthalein (H2A), an uncharged acid, have been determined at 25 °C in aqueous mixtures of 10, 30, 50, 70, and 80 wt% acetonitrile (ACN), 11.52, 20.31, 29.64, and 36.83 wt% urea, 20, 40, 60, and 80 wt% dimethyl sulfoxide (DMSO) by spectrophotometric measurements. The solvent effect represented by ∂(ΔG0) = 2.303RT[p(sK)N − p(wK)N] is found to increase in ACN + H2O system as mol% ACN increases in the solvent. In contrast, the corresponding values in urea + H2O as well as DMSO + H2O solvent systems decrease with increase in proportion of organic component in the solvent, the decrease being sharp in urea + H2O. The results have been discussed in terms of the standard Gibbs energies of transfer of H+ from water to the mixed solvent, [Formula: see text] and the relative values of the standard Gibbs energies of transfer of HA−, [Formula: see text] and of [Formula: see text] in all the solvent systems. The overall dissociation behaviour of the acid (H2A) is found to be dictated by the specific solute-solvent interactions of the species participating in the dissociation equilibria.

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A review on conductometric studies of electrolytes in mixed solvent systems to understand ion-ion and ion-solvent interactions

Biointerface Research in Applied Chemistry ◽

10.33263/briac102.332337 ◽

2020 ◽

Vol 10 (2) ◽

pp. 5332-5337

Keyword(s):

Mixed Solvent ◽

Mixed Solvents ◽

Chemical Properties ◽

Electrolyte Solutions ◽

Molar Conductance ◽

Extensive Literature ◽

Solvent Interactions ◽

Physico Chemical ◽

Wide Range ◽

Solvent Systems

The study of ion- solvent interaction is of much importance to investigate the nature of different solutions. Measurement of electrical conductivity and evaluation of physico-chemical properties, such as molar conductance, limiting molar conductance, ion-pair association, Walden product etc. shade light on different intermolecular interactions present in electrolyte solutions. Solvation properties can be varied by mixing two or more solvents. An extensive literature survey on conductometric studies has been carried out on different electrolytes dissolved in a wide range of mixed solvent systems. The reported results show that strong solute-solute, solute-solvent and solvent-solvent interactions are responsible for the physico- chemical behavior of a solution in mixed solvents.

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