| Autor: |
Gelb, R. I., Alper, J. S. |
| Zdroj: |
Journal of Chemical and Engineering Data; November 12, 1998, Vol. 43 Issue: 6 p1068-1071, 4p |
| Abstrakt: |
Using pH potentiometric measurements, concentration quotient and thermodynamic acid dissociation constants were determined for chlorodifluoroacetic acid. The determinations were carried out in aqueous media at seven temperatures ranging from 20 °C to 50 °C at an ionic strength of 0.25 mol dm-3. Standard enthalpies and entropies of the dissociation reaction were also obtained. At 25 °C, the thermodynamic values of these properties are K° = 0.495 ± 0.020, ΔH° = (−5.0 ± 1.1) kJ mol-1, and ΔS° = (−23.1 ± 3.6) J K-1 mol-1. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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