Viscosity studies of some 1:1 electrolyte solutions in N-methyl- 2-pyrrolidinone at 25°C

Abstract

The relative viscosities of solutions ofLiO₄, LiClO₄, NaNO₃. NaSCN. Kl, KSCN, AgNO₃, Bu₄NBr, Bu₄NI, NaBPh₄ and Bu₄NBPh₄ have been measured in the concentration range (6.89744.0)x 10^-4mol dm^-3 in N-methyl-2-pyrrolidinone at 25°C. The viscosity data have been analysed by the Jones-Dole equation and viscosity B-coefficients have been found to be positive. Ionic viscosity B- coefficients are obtained by splitting B-coefficients of Bu₄NBPh₄ into contributions due to individual ions in terms of their radii. The ionic viscosity B-coefficients follow the order: Li⁺> Na⁺ > K⁺ and BPh₄^- > SCN^- > Br^-> I^-> CIO₄^- > NO₃^- > Cl^-.