Browsing by Author "Hall, D. G."

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    Heats of Dilution of Sub-micellar Aqueous Surfactant Solutions
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (12), 1972) Birch, B. J.; Hall, D. G.
    Heats of dilution of sub-micellar solutions of a series of sodium alkyl sulphates and alkyltrimethylammonium bromides are reported and two possible interpretations of the observed deviations from simple Debye-Hiickel theory are given. The first is in terms of dimerisation of the surfactant ions. The second is that the effective distance of closest approach of ions of opposite charge decreases with increasing temperature because of corresponding decreases in hydrophobic hydration of the alkyl chains of the surfactant ions. Neither interpretation is to be preferred to the other on the basis of evidence currently available.