Measurements of the surface tension of aqueous solutions of NaF, KF, NaNO3 and KNO3 have been made by means of the ring detachment method. The data were obtained for a range of concentrations and temperatures and analysed using the Gibbs equation. A simple model is proposed which explains the correlation found between the surface-tension data and the standard hydration enthalpies of the salts.
M. J. Hey, D. W. Shield, J. M. Speight and M. C. Will, J. Chem. Soc., Faraday Trans. 1, 1981, 77, 123 DOI: 10.1039/F19817700123
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