eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences December 2008 20 3 485 492 jusps-B 1329 article Acoustical studies on ion-solvent interaction of some electrolytes in aqueous DMF mixed solvent system at different temperatures R. PALANI (palani_physics06@yahoo.co.in 1 A. Geetha 1 S. Balakrishnan 1 M. Catherine 1 Department of Physics, D.D.E., Annamalai University, Annamalainagar-608-002 (INDIA) <p style="text-align: justify;">Density (r), viscosity (h) and ultrasonic velocity (U) have been measured for sodium halide solutions namely sodium fluoride (NaF), sodium chloride(NaCl), sodium bromide (NaBr) in aqueous dimethylformamide (DMF) (1m) at 303, 308 and 313K. Using the experimental values, the adiabatic compressibility (&beta;), hydration number (n<sub>H</sub>), apparent molal compressibility (&phi;<sub>k</sub>), apparent molal volume (&phi;<sub>v</sub>), limiting apparent molal compressibility (&phi;<sup>o</sup><sub>k</sub>), limiting apparent molal volume(&phi;<sup>o</sup><sub>v</sub>) and their constants (S<sub>K</sub>, S<sub>V</sub>) and viscosity A and B coefficients of Jones-Dole equation were calculated and the results have been discussed in terms of ion-solvent interactions.<br /> &nbsp;</p> https://ultraphysicalsciences.org/paper/1329/ Ultrasonic velocity apparent molar volume hydration number