Hofmeister phenomena in nonaqueous media: The solubility of electrolytes in ethylene carbonate

Niccoloìe Peruzzi, Barry W. Ninham, Pierandrea Lo Nostro*, Piero Baglioni

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    57 Citations (Scopus)

    Abstract

    The solubility of some potassium salts (KF, KCl, KBr, KI, KNO3, KClO4, KSCN, and KSeCN) in ethylene carbonate (EC) was determined at different temperatures with an inductively coupled plasma atomic emission spectrometer. From the solubility measurements, the thermodynamic parameters ΔG, ΔH, and ΔS, of solution and of solvation, were calculated. Measurements were carried out via XRD, ATR, and FTIR to determine the effect of each salt on the properties of the solvent. The open question of whether specific ion (Hofmeister) effects are restricted to hydration peculiar to water is resolved. As for water, the effects are due to solute (ion, dipolar) induced solvent structure not accounted for by electrostatic forces. Cooperative quantum mechanical forces are necessary to understand the phenomena.

    Original languageEnglish
    Pages (from-to)14398-14405
    Number of pages8
    JournalJournal of Physical Chemistry B
    Volume116
    Issue number49
    DOIs
    Publication statusPublished - 13 Dec 2012

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