Standard molar enthalpy of formation, vapour pressures, and standard molar enthalpy of sublimation of benzanthrone

• Type: Article in International Scientific Journal
• Date: 1999

Authors

da Silva, MAVR (Author) FCUP; Ferrao, MLCCH (Author) Other; Monte, MJS (Author) FCUP; Goncalves, JM (Author) FCUP; Jiye, F (Author) Other

Journal

Title: Journal of Chemical Thermodynamics

Vol. 31

Pages: 1067-1075

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 22 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-001-3R1

DOI: 10.1006/jcht.1999.0516

Abstract (EN): The standard (p(O) = 0.1 MPa) molar enthalpy of combustion at T = 298.15 K of crystalline benzanthrone was determined as Delta(c)H(m)(O) = -(8114.7 +/- 2.0) kJ.mol(-1) by static-bomb calorimetry, and the standard molar enthalpy of formation of the crystal at T = 298.15 K was derived as Delta(f)H(m)(O)(cr) = -(4.1 +/- 3.0) kJ.mol(-1). Vapour pressure as a function of temperature was measured using the mass-loss Knudsen effusion technique, from which the standard molar enthalpy of sublimation at T = 298.15 K was derived as Delta(cr)(g)H(m)(O)= (126.6 +/- 0.6) kJ.mol(-1). The standard molar enthalpy of sublimation at T = 298.15 K was also measured by the quartz oscillator method, Delta(cr)(g)H(m)(O) (129.7 +/- 2.1) kJ.mol(-1) (C) 1999 Academic Press.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9