Studying the thermodynamic dissociation constants of monochloroacetic acid in mixture of ethanol - water

Abstract EN

This work reports the specific conductivities of monochloroacetic acid electrolyte in a binary mixture solvent of ethanol and water that it covered three solvent compositions ; 0.0586, 0.0855 and 0.1108 measured in a temperture range from 298.15 to 318.15 K.

The molar conductivities of the monochloroacetic acid electrolyte are treated by employing the Debye–Huckel–Onsager (DHO) equation.

The limiting molar conductivities of monochloroacetic acid electrolyte, classical dissociation constants and the degree of dissociation are etimated.

Furthermore, the thermodynamic dissociation constants "K" and standard thermodynamic functions of the dissociation process are calculated and discussed.

Walden product, corrected Stokes radius and the energy of activation at limiting dilution for the movement of CICH2COO- and H3O+ ions are determined.

The results showed the important role for the dielectric constant and the viscosity of mixture of ethanol and water in all values.