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Is There an Anionic Hofmeister Effect on Water Dynamics? Dielectric Spectroscopy of Aqueous Solutions of NaBr, NaI, NaNO3, NaClO4, and NaSC

Wachter, Wolfgang ; Kunz, Werner ; Buchner, Richard ; Hefter, Glenn



Abstract

A systematic study of the dielec. relaxation spectra of aq. solns. of NaBr, NaI, NaNO3, NaClO4, and NaSCN was made over a wide range of frequencies (0.2 ≤ ν/GHz ≤ 89) and solute concns. (0.05 ≤ c/M ≤ 1.5) at 25°. The spectra could be adequately described by a single Cole-Cole (CC) process, sym. broadened relative to that of pure water. However, similar quality fits were also obtained with a ...

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