Enthalpies of solution of n-alcohols in formamide and ethylene glycol

• Tipo: Artigo em Revista Científica Internacional
• Data: 1997

Autores

Rocha, F (Autor) Outra; Bastos, M (Autor) FCUP

Revista

Título: Journal of Solution Chemistry

Vol. 26

Páginas: 989-996

ISSN: 0095-9782

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 16 Citações

Scopus - 16 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-AKW

DOI: 10.1007/bf02768055

Abstract (EN): The enthalpies of solution of I-pentanol, 1-hexanol and 1-heptanol and water were determined in formamide and in ethylene glycol, at 25 degrees C, by macrosolution calorimetry. The observed enthalpies of solution far the n-alcohols are positive in the two solvents, and of similar magnitude. The enthalpy of solution of water is positive in formamide, and negative in ethylene glycol. From the enthalpies of solution, the enthalpies of salvation and the enthalpies of transfer for organic solvent-->water were calculated Using our values and literature data for alkanols, it was possible to see that both the enthalpies of solution and the enthalpies of salvation presented a constant CH2 increment for the entire series, in contrast with their behavior in water. The methylene increments for these properties in different solvents are compared with parameters considered to reflect the cohesive energy of the solvent.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8