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Information × Registration Number 0201U003650, 0199U004408 , R & D reports Title Polytermal investigation of the thermodynamic and physico-chemical properties of the polycomponent and polyphase systems and chemical equilibria in solvents of various nature popup.stage_title Head Lebid' V.I., Registration Date 03-04-2001 Organization Kharkov National University named after V.N. Karazin popup.description2 The objects of investigation are the liquid systems including solutions of colloidal surfactants that contain dyes, complexes of electronodonor ligands with mono- and dicharged cations as well as amino acids. The aim of the work is the further elaboration of the adequate model of ionic equilibria and interionic interactions in water-organic solutions and microgeterogenic systems. Methods of investigation: potentiometry, spectroscopy, solubility, viscosimetry. With the use of spectrophotometric method the ionization and tautomerism of 17 hydroxyxanthene dyes in micellar solutions of cetyltrimethylammonium chloride at high bulk ionic strength have been studied. The influence of zwitterionic colloidal surfactant on the acid-base equilibria of dyes of various charge type in aqueous solutions have been investigated. From the reologic study the regularities of structural interconversions in solutions of cationic surfactants in the presence of hydrophobic counterions as well as the influence of organic non-po lar solvents addition have been established. The absorption values, composition of the surface layer and activities of its components in solutions of methanol, ethanol, propanol, acetone, propanol-2, 1,4-dioxane and dimethylsulfoxide in water and benzene have been determined. The thermodynamics of complex formation of ammonium ion with dicyclohexyl-18-crown-6, with 18-crown-6 in dioxane-water system, of Cu2+ with glycine in propan-2-ol-water system have been obtained by potentiometric method in a wide temperature range. From EMF measurements the thermodynamic characteristics of beta-alanine dissociation by amino- and carboxylic groups in propanol-2-water mixtures have been determined. The Gibbs energy of transfer of protonated and deprotonated forms of alfa-amino acides in mixtures of methanol, ethanol and propanol-2 with water have been calculated. Product Description popup.authors popup.nrat_date 2020-04-02 Close