The Freezing of Supercolled Droplets of Electrolytic Solutions

R. G. De Pena Instituto de física de la Atmósfera and Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Servicio Meteorológico National, Argentina

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J. V. Iribarne Instituto de física de la Atmósfera and Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Servicio Meteorológico National, Argentina

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E. M. De Achával Instituto de física de la Atmósfera and Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Servicio Meteorológico National, Argentina

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Abstract

The freezing characteristics of supercooled droplets of electrolytic solutions were studied for a set of 22 electrolytes and for concentrations of 10−2, 10−2 and 10−1 N. Ethyl alcohol was also tested. The freezing curves were found to be similar to those of water. The mean freezing temperature was compared in each case with that of the water sample used as a solvent. The differences were interpreted for the more diluted solutions in terms of the theory of heterogeneous nucleation.

Abstract

The freezing characteristics of supercooled droplets of electrolytic solutions were studied for a set of 22 electrolytes and for concentrations of 10−2, 10−2 and 10−1 N. Ethyl alcohol was also tested. The freezing curves were found to be similar to those of water. The mean freezing temperature was compared in each case with that of the water sample used as a solvent. The differences were interpreted for the more diluted solutions in terms of the theory of heterogeneous nucleation.

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