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Thermodynamic Properties of Nibr2 and Niso4 from 10 to 1,200 K.

Authors
Stuve-JM; Ferrante-MJ; Ko-HC
Source
NTIS: PB 279 646 :15 pages
Link
NIOSHTIC No.
10007826
Abstract
The present Bureau of Mines investigation measured low-temperature heat capacities of nibr2 (8 to 302 k) and niso4 (9 to 70 k) by adiabatic calorimetry. The standard entropies (s deg, 298.15 K) of nibr2 and niso4 were calculated as 29.26 +/- 0.06 Cal/deg mole and 24.21 +/- 0.04 Cal/deg mole, respectively. (1 Cal = 4.1840 Joules.) Heat-of-solution measurements of anhydrous nibr2 were used to determine its enthalpy of formation (ahf deg, 298.15 K) as -50.64 +/- 0.31 Kcal/mole. High-temperature enthalpies of nibr2 and niso4 were measured by drop calorimetry to 1,150 k and 1,002 k, respectively. Enthalpies, heat capacities, and related formation functions are tabulated to 1,200 k.
Publication Date
19780101
Document Type
IH; Report of Investigation;
Fiscal Year
1978
NTIS Accession No.
PB 279 646
NTIS Price
A03
Identifying No.
RI 8271
NIOSH Division
ALRC;
Source Name
NTIS: PB 279 646
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