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Ion association and hydration in aqueous solutions of LiCl and Li2SO4 by dielectric spectroscopy

Wachter, Wolfgang ; Fernandez, Sarka ; Buchner, Richard ; Hefter, Glenn


A systematic study of the dielec. relaxation spectra of aq. solns. of LiCl and Li2SO4 has been made at solute concns. of 0.05 ≤ c/M ≤ 1.0 and 2.0, resp., and over a wide range of frequencies (0.2 ≤ ν/GHz ≤ 89) at 25°. The spectra were best described by a superposition of four Debye processes, consisting of the two well-known water relaxations at ca. 8 and 0.5 ps and two ion-pair contributions at ...


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