The Entropy of Solution of Nonelectrolytes
- 1 October 1952
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 20 (10) , 1520-1521
- https://doi.org/10.1063/1.1700206
Abstract
The linear relation between the logarithm of the solubility of a solid nonelectrolyte and the logarithm of the absolute temperature, recently set forth by one of us, makes possible a rather accurate calculation of the partial molal entropy of transfer of the solute from solid to saturated solution. By subtracting from this the calculated entropy of fusion of the solid, one obtains the entropy of transfer from pure liquid to solution. This is several entropy units in excess of the ideal entropy in the case of solutions with high activity coefficients, but this difference is satisfactorily accounted for by the entropy involved in the expansion which accompanies the formation of such solutions under constant pressure. The entropy of mixing at constant volume seems to conform closely to the ideal (or Flory‐Huggins) entropy.Keywords
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