A potentiometric method, a convenient and rapid technique for determination of the thermodynamics of ionization reactions for water, weak acids, and some slightly soluble salts in aqueous organic mixed solvents
A potentiometric method which is devised to be rapid and convenient for determining ionization constants for water, weak acids (or bases), and certain solids in mixed solvents is described. The method has been applied to the determination of ionization for water, acetic acid, benzoic acid, and phenol and the solubility product constant for silver chloride in mixtures of water with methanol, ethanol, acetone, tetrahydrofuran, and p-dioxane containing from 0 to 70 mass percent organic co-solvent at several temperatures between 10 and 40°C. Results are used to study the thermodynamics of ionization in each mixture which is discussed relative to various topics of ion-ion, ion-solvent, ion-molecule, molecule-solvent, and solvent-solvent interactions on the basis of theories of electrostatics, salvation, and solvent and solution structure. A calorimetric technique applied to the investigation of dimerization of benzoic acid, m-toluic acid, and o-toluic acid in benzene and toluene at 25°C as a preliminary study of the author is briefly mentioned in Appendix E.
College and Department
Physical and Mathematical Sciences; Chemistry and Biochemistry
BYU ScholarsArchive Citation
Panichajakul, Charanai, "A potentiometric method, a convenient and rapid technique for determination of the thermodynamics of ionization reactions for water, weak acids, and some slightly soluble salts in aqueous organic mixed solvents" (1976). Theses and Dissertations. 8325.
Ionization, Thermodynamics, Water, Acids, Salts, Solvents