| Article |
|---|
| Article name |
Electrical Potentials and Phase Transitions of Sodium Chloride Solution |
| Authors |
Gurulev A.A. Candidate of Physics and Mathematics Science, Senior Researcher,, lgc255@mail.ru |
| Bibliographic description |
Gurulev A. A. Electrical Potentials and Phase Transitions of Sodium Chloride Solution // Scholarly Notes of Transbaikal State University. 2019. Vol. 14, No 3. PP. 67-74. DOI: 10.21209/2308-8761-2019-14-3-67-74. |
| Section |
MATHEMATICAL MODELS. EXPERIMENT |
| UDK |
544.635 |
| DOI |
10.21209/2308-8761-2019-14-3-67-74 |
| Article type |
|
| Annotation |
Due to the wide distribution of salt solutions in nature (in water bodies, in soils, in vegetation, etc.), an urgent task is to study the physicochemical processes taking place in them not only at positive temperatures, but also at negative ones. In the present work, the study of electrokinetic effects accompanying the crystallization of water-salt solutions was carried out using the example of sodium chloride solution. The measurements were performed with a monotonic change in the temperature of the sodium chloride solution at a rate of 0.28°C/min with simultaneous measurement of the EMF arising between the platinum and copper electrodes, and temperature. As a result of the experiments, a correlation of the EMF signals in the sodium chloride solution with the process of crystallization of the sample at the eutectic temperature was found. At this moment, the magnitude of the EMF signal increases and then sharply tends to the minimum value. Also, by the rate of change of the sample temperature, it is possible to determine phase transitions in liquid and solid media. With joint thermometry and measurements of electric potentials, it is possible to study the features of the processes of formation and destruction of crystals in solutions.
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| Key words |
water-salt solutions, electrical potentials, ice crystallization, thermometry, phase transitions |
| Article information |
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| References |
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