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http://nopr.niscpr.res.in/handle/123456789/18076| Title: | The effect of 18-crown-6 on the solubility and thermodynamic parameters of Li2CO3, Na2CO3, NaCl, CH3COONa and KCl in methanol and ethanol |
| Authors: | El -Dossoki, Fl |
| Issue Date: | Aug-2005 |
| Publisher: | NISCAIR-CSIR, India |
| IPC Code: | Int. Cl.7 C07C59/00 |
| Abstract: | The effect of different concentrations of a cyclic polyether 18-crown-6 (18C6) on the solvation parameters of some alkali metal salts has been studied. The molal solubilities of Li2CO3, Na2CO3, NaCl, CH3COONa and KCl have been determined experimentally (using volumetric and precipitation titrations) in the absence and in presence of different concentrations of 18C6 in methanol and ethanol at 20, 25, 30 and 35oC. From the experimental results, the solvation thermodynamic parameters (the free energy, the enthalpy and the entropy) have been calculated and discussed. Also the effects of different concentrations of 18C6, temperature, anion, ionic radius and solvent on the parameters have been discussed. |
| Page(s): | 1594-1596 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.44A(08) [August 2005] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 44A(8) 1594-1596.pdf | 662.12 kB | Adobe PDF | View/Open |
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