Siberian Federal University

The study investigates the solvation dynamics and interactions of potassium chloride (KCl) in an acetone-water mixture by examining changes in density, viscosity, refractive index, and UV absorbance. As KCl is introduced into the mixed solvent system, notable changes in these physical properties are observed, revealing insights into the interplay between KCl ions and the acetone-water environment. The results indicate that increasing KCl concentration initially increases viscosity and refractive index due to ion-solvent interactions but also causes a gradual decrease in solution density. UV spectra reveal that water stabilizes KCl ions more effectively than acetone, resulting in higher UV absorbance in water-rich solutions. These findings underscore the role of solvent composition in governing solvation behaviour of KCl and provide a foundation for further exploration of electrolyte behaviour in mixed solvents, which is crucial for applications in analytical chemistry and materials science