Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9694260 | Thermochimica Acta | 2005 | 5 Pages |
Abstract
Calorimetric titrations have been performed in the liquid biphasic system chloroform/water. The reactions between salts in aqueous in different crown ethers and a cryptand in chloroform solution have been studied. After saturation of each solvent with the other no heats of mixing are detected. The values of the stability constants are related to different individual reaction steps during the complex formation. The experimental values show that the complex formation itself is not measured. Other steps e.g. transfer of the salt from one solvent to the other are responsible for the calculated values. On the other hand the overall reaction enthalpies show a significant contribution resulting from the interactions between the ligands and the cation or salt. A more detailed discussion is not possible at the moment.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
A. Gherrou, H.-J. Buschmann, E. Schollmeyer,