Cryoscopic and calorimetric investigations of betaine and betaine hydrochloride

J. C. Ahluwalia, Frank J. Millero, Robert N. Goldberg, Loren G. Hepler

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Results of cryoscopic, calorimetric, and conductometric investigations of betaine and betaine hydrochloride in aqueous solution are presented and used in subsequent thermodynamic calculations. For the ionization of aqueous [(CH3)3N+CH2COOH] we find ΔG° = 2.50 kcal mole-1, ΔH° = -0.08 kcal mole-1, ΔS° = -8.7 cal deg-1 mole, and ΔCP° = -7 cal deg-1 mole-1. A new freezing point apparatus utilizing thermistors is described.

Original languageEnglish (US)
Pages (from-to)319-323
Number of pages5
JournalJournal of physical chemistry
Volume70
Issue number2
DOIs
StatePublished - Jan 1 1966

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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