Thermodynamics of Ionization of Aqueous Hydroxybenzaldehydes and Vanillins

Frank J. Millero, J. C. Ahluwalia, Loren G. Hepler

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Heats of ionization of o-hydroxybenzaldehyde, m-hydroxybenzaldehyde, p-hydroxybenzaldehyde, vanillin, isovanillin and o-vanillin have been determined calorimetrically at 298° K. Entropies of ionization of these acids in aqueous solution have been calculated from these heats and free energies derived from ionization constants. The thermodynamic data are discussed briefly.

Original languageEnglish (US)
Pages (from-to)319-320
Number of pages2
JournalJournal of Chemical and Engineering Data
Issue number2
StatePublished - Apr 1 1964


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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