VH2: enthalpy of formation

1 accepted literature formation-enthalpy value(s) (model 1).

Systems: H–V

Literature values

Enthalpy of formation of VH2 reported in the literature (1)
ValuePhase as printedT (K)ClassMethodSystemSourceLocationQuote
-18.4 kJ/mol (basis unstated)δ-VH20modelH–V[1] Ukita 2008Table 2, p. 3, row 1
report

Uncertainty budget

Components kept separate, in the value's unit (literature SCHEMA.md, UNCERTAINTY_CALIBRATION.md): effective = max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter). The method floor is the robust between-study scatter of the method class in ORCHID (calibrated) or a documented prior; printed values and printed uncertainties are unchanged.

Uncertainty budget of the literature values of VH2
ValueUnitPrintedReadingMethod (class, basis)CompositionScatterConversionEffective
-18.4kJ/mol (basis unstated)5.000e-411.7 (model_calculated, calibrated)11.7

Sources

  1. Shusuke Ukita, Hiroshi Ohtani, Mitsuhiro Hasebe, Thermodynamic Analysis of the V–H Binary Phase Diagram, Mater. Trans. 49, 2528-2533 (2008). doi:10.2320/matertrans.mb200810