Contraction of non-aqueous solutions of acids and alcohols

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 molecules / ions of the solute and molecules of the solvent due to electrostatic interaction and the occurrence 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 liquid systems. To eliminate this drawback, the presented study determines the contraction of non-aqueous solutions of mono- and polyatomic alcohols and carboxylic acids. The obtained data are systematized and analyzed, a number of fluid systems are proposed for laboratory modeling of diffusion processes in microgravity.