Collect. Czech. Chem. Commun. 1995, 60, 55-64

Viscosity Studies of Some Electrolytes in Dimethyl Sulfoxide and N,N-Dimethylformamide at Different Temperatures

Mohinder S. Chauhan, Manita Sharma, Kishore C. Sharma, K. Ashwini and Suvarcha Chauhan

Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla-171005, India


The limiting molar conductivity Λ0 and the Jones-Dole viscosity coefficients A and B were measured for Ph4PBPh4, Bu4NBPh4, Bu4NClO4, Ph4PBr, Bu4NBr, NaBPh4, NaClO4, KClO4, LiClO4 and AgClO4 in pure DMF and DMSO at 20, 30 and 40 °C. The experimental coefficients A are compared with the coefficients A calculated from the Falkenhagen-Vernon equation. The ionic viscosity coefficients B, which were obtained using Ph4PBPh4 as the reference electrolyte, are discussed in terms of the contributions in the expression: Bion = Bw + Bsolv + Bord + Bdisord + Bshape.