Solution-calorimetric determination of the standard molar enthalpies of formation of the pseudobinary compounds Zr(AlxFe1 - x)2 at the temperature 298.15 K

R. Klein; I. Jacob; P. A.G. O'Hare; R. N. Goldberg

doi:10.1006/jcht.1994.1069

Solution-calorimetric determination of the standard molar enthalpies of formation of the pseudobinary compounds Zr(Al_xFe_{1 - x})₂ at the temperature 298.15 K

R. Klein, I. Jacob, P. A.G. O'Hare, R. N. Goldberg

Unit of Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

Standard molar enthalpies of formation Δ_fH^o _m at the temperature T = 298.15 K have been determined from calorimetric measurements of the enthalpies of reaction Δ_fH^o _m of six compositions in the Zr(Al_xFe_{1 - x})₂ pseudobinary system with (hydrofluoric acid + nitric acid). The following results (with uncertainties given as twice the standard deviation of the mean) are reported. See Table. Previous thermodynamic studies of the terminal compositions (x = 0, 1) have been reviewed, and the following quantities at T = 298.15 K are recommended: Δ_fH^o _m(ZrFe₂) = -(75 ± 6) kJ·mol^-1 and Δ_fH^o _m(ZrAl₂) = -(147 ± 7) kJ·mol^-1.

Original language	English
Pages (from-to)	599-608
Number of pages	10
Journal	Journal of Chemical Thermodynamics
Volume	26
Issue number	6
DOIs	https://doi.org/10.1006/jcht.1994.1069
State	Published - 1 Jun 1994

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Materials Science
Physical and Theoretical Chemistry

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title = "Solution-calorimetric determination of the standard molar enthalpies of formation of the pseudobinary compounds Zr(AlxFe1 - x)2 at the temperature 298.15 K",

abstract = "Standard molar enthalpies of formation ΔfHo m at the temperature T = 298.15 K have been determined from calorimetric measurements of the enthalpies of reaction ΔfHo m of six compositions in the Zr(AlxFe1 - x)2 pseudobinary system with (hydrofluoric acid + nitric acid). The following results (with uncertainties given as twice the standard deviation of the mean) are reported. See Table. Previous thermodynamic studies of the terminal compositions (x = 0, 1) have been reviewed, and the following quantities at T = 298.15 K are recommended: ΔfHo m(ZrFe2) = -(75 ± 6) kJ·mol-1 and ΔfHo m(ZrAl2) = -(147 ± 7) kJ·mol-1.",

author = "R. Klein and I. Jacob and O'Hare, {P. A.G.} and Goldberg, {R. N.}",

year = "1994",

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journal = "Journal of Chemical Thermodynamics",

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TY - JOUR

T1 - Solution-calorimetric determination of the standard molar enthalpies of formation of the pseudobinary compounds Zr(AlxFe1 - x)2 at the temperature 298.15 K

AU - Klein, R.

AU - Jacob, I.

AU - O'Hare, P. A.G.

AU - Goldberg, R. N.

PY - 1994/6/1

Y1 - 1994/6/1

N2 - Standard molar enthalpies of formation ΔfHo m at the temperature T = 298.15 K have been determined from calorimetric measurements of the enthalpies of reaction ΔfHo m of six compositions in the Zr(AlxFe1 - x)2 pseudobinary system with (hydrofluoric acid + nitric acid). The following results (with uncertainties given as twice the standard deviation of the mean) are reported. See Table. Previous thermodynamic studies of the terminal compositions (x = 0, 1) have been reviewed, and the following quantities at T = 298.15 K are recommended: ΔfHo m(ZrFe2) = -(75 ± 6) kJ·mol-1 and ΔfHo m(ZrAl2) = -(147 ± 7) kJ·mol-1.

AB - Standard molar enthalpies of formation ΔfHo m at the temperature T = 298.15 K have been determined from calorimetric measurements of the enthalpies of reaction ΔfHo m of six compositions in the Zr(AlxFe1 - x)2 pseudobinary system with (hydrofluoric acid + nitric acid). The following results (with uncertainties given as twice the standard deviation of the mean) are reported. See Table. Previous thermodynamic studies of the terminal compositions (x = 0, 1) have been reviewed, and the following quantities at T = 298.15 K are recommended: ΔfHo m(ZrFe2) = -(75 ± 6) kJ·mol-1 and ΔfHo m(ZrAl2) = -(147 ± 7) kJ·mol-1.

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U2 - 10.1006/jcht.1994.1069

DO - 10.1006/jcht.1994.1069

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ER -

Solution-calorimetric determination of the standard molar enthalpies of formation of the pseudobinary compounds Zr(Al_xFe_{1 - x})₂ at the temperature 298.15 K

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