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Thermodynamic Properties of Vanadium Silicides. I. Standard Molar Enthalpy of Formation δfH of Vanadium Disilicide (VSi2) at the Temperature of 298.15 K

Published

Author(s)

P A. O'Hare, K Watling, G A. Hope

Abstract

The massic energy of combustion of vanadium disilicide in fluorine according to the reaction: VSi2(cr) + (13/2)F2(g) = VF5(g) + 2SiF4(g), has been measured calorimetrically. On the basis of the derived molar enthalpy of reaction and the standard molar enthalpies of formation δfH of VF5(g) and SiF4(g), δfH (VSi2, cr, 298.15 K) = -(133.3 + 2.0) kJ mol-1 at T = 298.15 K and p = 0.1 MPa. This result is compared with other values of δfH (VSi2) from the literature.
Citation
Journal of Chemical Thermodynamics
Volume
31
Issue
No.11

Keywords

enthalpy of formation, fluorine calorimetry, vanadium silicide

Citation

O'Hare, P. , Watling, K. and Hope, G. (1999), Thermodynamic Properties of Vanadium Silicides. I. Standard Molar Enthalpy of Formation &#948;<sub>f</sub>H of Vanadium Disilicide (VSi<sub>2</sub>) at the Temperature of 298.15 K, Journal of Chemical Thermodynamics (Accessed April 14, 2024)
Created November 1, 1999, Updated February 17, 2017