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http://nopr.niscpr.res.in/handle/123456789/20838| Title: | Viscometric studies for some 1:1 electrolytes in water + tert-butyl alcohol and water + tert-butylamine mixtures at 298.15 K |
| Authors: | Kipkemboi, Pius K Easteal, Allan J |
| Issue Date: | Jun-2002 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Viscosity and density measurements for NaI, KI , BU4NI, LiCl and KCl in various mixtures of water with tert-butyl alcohol and tert-butylamine have been carried out at 298.15 K. The viscosity data have been analysed on the basis of the Jones-Dole equation and viscosity B-coefficients have been evaluated. The small and positive values of B coefficients for LiCl in mixed liquid solvents as observed in both systems lead to the conclusion that ion-solvent interaction is not strong. The B coefficients for hydrophobic Bu4NI are large, positive and fairly constant for both systems probably due to the absence of specific hydration and solvation effects. The values of B coefficient for KCl exhibit a minimum in the water-rich region for both systems. However, the solvent composition dependence of B coefficients for both NaI and KI electrolytes are drastically different in the two solvent systems. The viscosity B coefficients for NaI and KI are significantly reduced in tert-butylamine-rich mixtures while in tert-butyl alcohol-rich mixtures they increase profoundly compared to water-rich mixtures. Values of the partial molar volumes of the electrolytes at infinite dilution in the various solvent mixtures have been evaluated from the density measurements. |
| Page(s): | 1139-1145 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.41A(06) [June 2002] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 41A(6) 1139-1145.pdf | 1.24 MB | Adobe PDF | View/Open |
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