Thermodynamics of association for benzene-benzyl alcohol, benzene-phenethyl alcohol, and fluorobenzene-benzyl alcohol in dilute aqueous solution
Vapor pressure measurements have been made on dilute aqueous solutions of benzene-benzyl alcohol (BZOH), benzene-phenethyl alcohol (PEOH), and fluorobenzene-BZOH at 15, 25, 35, and 45/sup 0/C. The benzene results have been interpreted with a mass action model which attributes deviations from ideality to the formation of benzene dimers and heterodimers with BZOH and PEOH. The benzene heterodimers form endothermically at 25/sup 0/C with large and negative heat capacity changes. The dimerization constant for the benzene-BZOH dimer reaches a maximum of 0.57 M/sup -1/ at about 37/sup 0/C, while the benzene-PEOH dimer reaches a maximum of 0.60 M/sup -1/ around 30/sup 0/C. The fluorobenzene results have been interpreted with a mass action model which, in addition to fluorobenzene dimers and heterodimers, includes the formation of a fluorobenzene-BZOH trimer. Thermodynamic properties for these aggregates are reported and compared with results obtained in previous studies.
- Research Organization:
- Univ. of Oklahoma, Norman
- OSTI ID:
- 6762549
- Journal Information:
- J. Solution Chem.; (United States), Journal Name: J. Solution Chem.; (United States) Vol. 15:12; ISSN JSLCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
AQUEOUS SOLUTIONS
AROMATICS
BENZENE
BENZYL ALCOHOL
BINARY MIXTURES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DIMERIZATION
DIMERS
DISPERSIONS
ENTHALPY
EQUILIBRIUM
FLUORINATED ALIPHATIC HYDROCARBONS
FORMATION HEAT
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
HYDROXY COMPOUNDS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERIZATION
REACTION HEAT
SOLUTIONS
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
VAPOR PRESSURE