Tychyna O. The acid - base equilibria in the water - butanol-1 system.

The thesis are devoted to the problems of standardization of protonic acidity measurements and studies of acid-base equilibria of dyes series with various charge types and functional groups in the water - butanol-1 system at various content of alcohol (outside the region of stratification). The set of standard buffer solutions in water - butanol-1 mixtures (5, 82, 90 and 100 wt% of alcohol) has been worked out. The values of dissociation costants of some weak acids and indicator dyes of various clases have been obtained by combining spectrophotometrical and potentiometrical methods. It has been found that the water - butanol-1 mixture with mass fraction of alcohol 82% displays differentiating action in respect to dissociation of indicator dyes and acid with different charge types. The character of differentiating action of the abovementioned mixture is similar to that of microemulsion drops stabilized by non-ionogeneous surfactants and butanol-1.