Comparative evaluation of the structure of water and aqueous solutions of ethanol using electrophysical methods

The modern idea of the structure of water is that in water, there is a complex structural organization, namely, a three-dimensional net formed by molecules that are connected by hydrogen bonds. It is shown that individual water molecules are combined into associates (clusters), which are located in a continuous liquid phase. It is known that ethyl alcohol also is associated with liquids, owing to the ability of their molecules to form hydrogen connections with energy estimated at 6 kcal/¼«½ý [10]. These associates are linear chains or flat rings. The work studies the dynamics of the processes of structurization in aqueous-alcoholic solutions of various concentrations using electrophysical methods in a frequency range of 100 Hz to 300 kHz and generalization of the results received. It is shown that at 25°C in water-ethanol solutions, compared with distilled water, at frequencies from 0.1 kHz to 300 kHz a decrease in capacitance occurs that is proportional to the increasing solution concentration with the minima at 3-10 kHz, but the quality factor of the resonant circuit when the resonant frequencies of 30 kHz, 100 kHz, and 300 kHz increases. With increasing temperature of the water-alcohol solution (4 mol %) and distilled water from 10 to 70°C, their electrical capacity is observed to increase in the frequency range from 0.1 kHz to 30 kHz with a maximum at 3 kHz; however at 100 kHz and 300 kHz, the electrical capacity of these fluids is reduced. Changes in the electrical capacitance and q-factor resonant circuit in water-alcohol solutions reflect the change in the mobility of the dipoles and in the structure of solutions and have the same tendency as activated distilled water with a magnetic field, as well as when heated to 60°C with subsequent cooling to the initial temperature 20°C without access to air, or by reducing the water temperature to 10°C. The data obtained should be taken into account when conducting various research in chemistry, biology, and medicine and in the interpretation of the known effects of ethanol.

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