ISSN: 1813-0410

Author : Edan Salmanand, Hamieda

Ion-Pair Formation of Ammonium Fluoride inTetramethylUrea-WaterMixtures from Conductivity Measurements

Hamieda Edan Salmanand; Shaker Mahmud Juad

journal of kerbala university, Volume 1, Issue 0, Pages 273-278

The equivalent conductivity (Λ) at different concentrations of NH4F solutions in tetramethyl urea (TMU-water) mixtures at 25C˚ has been determined from direct conductance measurements. The association constant (Ka) for ion-pair formation and the equivalent conductivity of the electrolyte at infinite dilution (Λە) in the different mixtures by a least square method with an appropriate computer programme using Shedlovsky method. Densities, viscosities and dielectric constants have been measured for all the solvent mixtures at 25C˚.Walden products (W) have been calculated for NH4F from the (Λ ە)and the viscosities (ηᵒ) of theTMU-water mixtures.