Limiting partial molar volumes of tetra- -alkylammonium perchlorates in , - dimethylacetamide, triethylphosphate and dimethyl sulfoxide at= 298.15 K

Standard Partial Molar Volumes of Electrolytes and Ions in Nonaqueous Solvents

“…On this basis a value of V °(ClO 4 - ) = 39 cm 3 mol -1 was derived and, hence, those of the other cations shown in Table . Somewhat different values were reported later by this group, but they were within the claimed limits of error.…”

“…The V ° values for electrolytes in N , N -dimethylacetamide (DMA) at 25 °C are shown in Table . Most of the data are from the group in Gdansk ,− and have not been confirmed independently; neither have those of Das et al For two salts, the same group reported different values in two papers. The additivity test [ V °(ClO 4 - ) − V °(Br - ) = 51.7 (Pr 4 N + ), 50.2 (Bu 4 N + ) cm 3 mol -1 ] is in fair agreement but could be applied only to two sets of salts.…”

“…g Reference 81, M ex based on R 4 NI data of ref . h References 131, 159, 173, and 175, preferred TPTB-traceable value; other values were derived by different methods discussed in ref . i Unknown uncertainty; see footnote w in Table .…”

Acoustic Studies of Preferential Solvation of Tetraalkylammonium Salts in Dimethylsulfoxide + Methanol Binary Mixtures at 298.15 K

“…Ultrasonic velocity and density measurements of binary mixtures as well as of the salt solutions were carried out using Anton Paar digital densimeter (model DSA 5000) operated in the static mode and automatically thermostated within ±0.001 K. The densities and ultrasonic velocity had precision better than ±1×10 -6 g cm -3 and ±1×10 -2 m s -1 respectively. The uncertainties in the solution density and ultrasonic velocity were found to be better than ±5×10 -6 g cm -3 and ±5×10 -2 m s -1 respectively 13 .…”

Standard partial molar volumes of some electrolytes in ethylene carbonate based mixtures

“…in which a negative slope has been reported. The literature [7] revealed that the higher the dielectric constant of the solvent, the lower is the slope of the equation (2). Among the studied co-solvents, AN has the highest dielectric constant (36.01), but it is only about one third of EC (90.36).…”