Solubilities of L-aspartic, DL-aspartic, DL-glutamic, p-hydroxybenzoic, o-anistic, p-anisic, and itaconic acids in water from T = 278 K to T = 345 K

Alexander Apelblat, Emanuel Manzurola

Research output: Contribution to journalArticlepeer-review

438 Scopus citations

Abstract

Solubilities of L-aspartic, DL-aspartic, DL-glutaric, p-hydroxybenzoic, o-anisic, p-anisic, and itaconic acids in water were determined in the temperature range 278 to 345 K. From these solubilities the apparent molar enthalpies of solution at T = 298.15 K were derived, and these are: ΔsolHm-(L-C4H7O4N, m = 0.0379 mol · kg-1) = 26.7 kJ · mol-1; ΔsolHm(DL-C4H7O4N, m = 0.0590 mol · kg-1) = 30.8 kJ · mol-1; ΔsolHm(DL-C5H9O4N, m = 0.0965 mol · kg-1) = 27.3 kJ · mol-1; ΔsolHm(p-C7H6O3, m = 0.0488 mol · kg-1) = 41.9 kJ · mol-1; ΔsolHm(o-C8H8O3, m = 0.0197 mol · kg-1) = 28.5 kJ · mol-1; ΔsolHm-(p-C8H8O3, m = 0.00169 mol · kg-1) = 28.1 kJ · mol-1; and ΔsolHm(C5H6O4, m = 0.7605 mol · kg-1) = 33.7 kJ · mol-1.

Original languageEnglish
Pages (from-to)1527-1533
Number of pages7
JournalJournal of Chemical Thermodynamics
Volume29
Issue number12
DOIs
StatePublished - 1 Jan 1997

Keywords

  • Molar enthalpies of solution
  • Organic acids
  • Solubilities

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science (all)
  • Physical and Theoretical Chemistry

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