Conclusions
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1.
The polytherms of the surface tension of water and of an aqueous solution of NaCl were studied. On the polytherms of the surface tension of freshly redistilled water and a solution of NaCl prepared with it, there are periodic singularities with a period of 3°.
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2.
The type of polytherm of the surface tension of water and of an aqueous solution of NaCl depends substantially upon the prehistory of the sample.
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3.
The reproducibility of the periodic singularities is low- the period of the “sine curves” and temperatures of the minima are reproduced, but the amplitude and temperatures of the maxima are not reproduced.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 571–577, March, 1967.
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Kirgintsev, A.N., Efanov, L.N. Some peculiarities of the polytherms of the surface tension of water and aqueous solutions. Russ Chem Bull 16, 551–556 (1967). https://doi.org/10.1007/BF00905990
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DOI: https://doi.org/10.1007/BF00905990