A Study of the Surface Tension of Some Electrolytic Solutions 


Vol. 8,  No. 1, pp. 1-4, Feb.  1964


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  Abstract

Relative surface tensions of aqueous solutions of KCl, KI and NaI have been measured at 25℃ (30℃ for KCl) over a concentration range of 0.0001 to 3M solution. It was observed that there was a minimum in the surface tension-concentration curve for the extremely dilute solutions. Appearance of the minimum has been reported for the other salt solutions so far reported. At moderate and high concentration, these three salts increase the surface tension of water almost linearly as concentration increased, and behaved as a typical "capillary inactive substance", whereas they acted as a capillary active substance in very dilute solutions. Since the Onsager-Samaras equation for the surface tension as a function did not agree with the experimental data, the following empirical equations for the whole concentration range used were obtained. σr = 1 + 0.00072√c - 0.0011c + 0.023c2 for KCl at 30℃ σr = 1 + 0.0077√c - 0.0015c + 0.024c2 for KI at 25℃ σr = 1 + 0.00011√c - 0.0090c + 0.077c2 for NaI at 25℃

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  Cite this article

[IEEE Style]

Y. Sakong, J. Hwang, M. Son, "A Study of the Surface Tension of Some Electrolytic Solutions," Journal of the Korean Chemical Society, vol. 8, no. 1, pp. 1-4, 1964. DOI: .

[ACM Style]

Yull Sakong, Jung-Euy Hwang, and Moo-Yong Son. 1964. A Study of the Surface Tension of Some Electrolytic Solutions. Journal of the Korean Chemical Society, 8, 1, (1964), 1-4. DOI: .

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ISSN(Print) 1017-2548
ISSN(Online) 2234-8530