Standard molar enthalpies of formation of some chloropyridines

• Type: Article in International Scientific Journal
• Date: 1997

Authors

da Silva, MAVR (Author) FCUP; Matos, MAR (Author) FCUP; Amaral, LMPF (Author) Other

Journal

Title: Journal of Chemical Thermodynamics

Vol. 29

Pages: 1535-1543

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 25 Citations

Scopus - 27 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-001-A7D

Abstract (EN): The standard (p degrees = 0.1 MPa) molar enthalpies of formation Delta(f)H(m) degrees for liquid 2- and 3-chloropyridine, and crystalline 2,3-, 2,5-, 2,6-, and 3,5-dichloropyridine were derived from the standard molar enthalpies of combustion Delta(c)H(m) degrees at T = 298.15 K in oxygen using rotating-bomb combustion calorimetry. The reaction products were: CO2(g), N-2(g), and HCl . 600H(2)O(1). The standard molar enthalpies of vaporization, or sublimation Delta (Hcr,lHm)-H-g degrees at T = 298.15 K were measured by Calvet microcalorimetry. The results are as follows: [GRAPHICS] The derived standard molar enthalpies of formation in the gaseous state are shown to fit a group additivity scheme. (C) 1997 Academic Press Limited.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9