The solubility of some univalent potassium salts (KF, KCl, KBr, KI, KClO4, KSCN, and KCNO) in propylene carbonate (PC) was determined at different temperatures through Flame Emission Spectroscopy. From the solubility measurements, the thermodynamic parameters ∆G0, ∆H0 and ∆S0 of solution were calculated. Measurements were carried out via conductimetry and FTIR to investigate the formation of ion pairs, and the ion-solvent interactions. This study was motivated by the open question of whether specific ion (Hofmeister) effects are related to the structure of the solvent (i.e. hydrogen bonding). As for water the effects are due to solute induced solvent structure changes not accounted for by electrostatic forces.
The solvation of anions in propylene carbonate / Peruzzi, Niccolo'; LO NOSTRO, Pierandrea; Ninham, B. W.; Baglioni, Piero. - In: JOURNAL OF SOLUTION CHEMISTRY. - ISSN 0095-9782. - STAMPA. - 44:(2015), pp. 1224-1239. [10.1007/s10953-015-0335-z]
The solvation of anions in propylene carbonate
PERUZZI, NICCOLO';LO NOSTRO, PIERANDREA;BAGLIONI, PIERO
2015
Abstract
The solubility of some univalent potassium salts (KF, KCl, KBr, KI, KClO4, KSCN, and KCNO) in propylene carbonate (PC) was determined at different temperatures through Flame Emission Spectroscopy. From the solubility measurements, the thermodynamic parameters ∆G0, ∆H0 and ∆S0 of solution were calculated. Measurements were carried out via conductimetry and FTIR to investigate the formation of ion pairs, and the ion-solvent interactions. This study was motivated by the open question of whether specific ion (Hofmeister) effects are related to the structure of the solvent (i.e. hydrogen bonding). As for water the effects are due to solute induced solvent structure changes not accounted for by electrostatic forces.
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Descrizione: Articolo principale: effetto dello ione specifico sulla solubilità dei sali in propilene carbonato.
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