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Thermodynamic properties of vanadium silicides II. Standard molar enthalpy of formationΔfHmo(298.15 K) and reassessed thermodynamic properties of trivanadium monosilicide (V3Si)

✍ Scribed by P.A.G. O’Hare; K. Watling; G.A. Hope

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 146 KB
Volume: 32
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.1999.0612

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✦ Synopsis

Fluorine bomb combustion calorimetric measurements of the energy of the reaction: V 3 Si(cr) + (19/2)F 2 (g) = 3VF 5 (g) + SiF 4 (g), have given a value of -(163.3 ± 6.9) kJ • mol -1 for the standard molar enthalpy of formation f H o m (V 3 Si, cr) at T = 298.15 K and p o = 101.325 kPa. This result is compared with others from the literature. A table is also given of the reassessed conventional chemical thermodynamic properties of V 3 Si from T = 298.15 K to T = 1700 K.

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