Abstract
Contraction is a non-additive change in the volume of a solution with a change in the concentration of one of its components. Contraction is caused by the formation of compounds based on mole-cules / ions of the solute and molecules of the solvent due to electrostatic interaction and the occur-rence of hydrogen or other bonds. This effect, inherent in all true solutions, is still rarely taken into account in the analysis of hydrodynamic and heat/mass transfer phenomena. The reason for this situation is the lack of information on contraction for most liquidsystems. To eliminate this draw-back, the presented study determines the contraction of non-aqueous solutions of mono-and polya-tomic alcohols and carboxylic acids. The obtained data are systematized and analyzed, a number of fluidsystems are proposed for laboratory modeling of diffusion processes in microgravity.
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