The transport properties and the association behavior of some 1:1 and 2:1 electrolytes in some binary alcoholic-aqueous mixtures

► The specific conductance of C2O4Na2, C2O4(NH4)2 and H3COONH4 was measured. ► The association constant, Walden product, and hydrodynamic radii were calculated. ► The standard thermodynamic parameters of association were discussed. ► The association constant order is in MeOH-H2O ≥ in GlyOH-H2O > in EtOH-H2O. ► The association constant order is C2O4Na2 > C2O4(NH4)2 > CH3COONH4.