Abstract
The apparent molal heat capacities\(\phi _{{\text{C}}_p }\) have been determined at 25°C for phenol,meta-nitrophenol,para-nitrophenol,meta-cyanophenol, andpara-cyanophenol and the corresponding sodium salts in water at several concentrations. These values have been extrapolated to infinite dilution to provide the\(\bar C_p^o\) values from which the heat capacity changes for the ionization of the aqueous phenols have been calculated. The observed\(\Delta \bar C_{p_i }^o\) values are virtually identical within experimental error for the phenols studied. The volume data needed to calculate the\(\phi \bar C_p\) values from the experimental data are also reported.
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Hopkins, H.P., Duer, W.C. & Millero, F.J. Heat capacity changes for the lonization of aqueous phenols at 25°C. J Solution Chem 5, 263–268 (1976). https://doi.org/10.1007/BF00645464
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DOI: https://doi.org/10.1007/BF00645464