niobium oxide


Liquid Phase Heat Capacity (Shomate Equation)

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 2210. - 3000.
A 14.99952
B 0.000373
C -0.000108
D 0.000011
E 0.000321
F -88.60086
G 32.44073
H -80.48351
ReferenceChase, 1998
Comment Data last reviewed in December, 1973
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
2210.15.0044.3433.0125.03
2300.15.0044.9333.4626.38
2400.15.0045.5733.9627.88
2500.15.0046.1934.4329.38
2600.15.0046.7734.9030.88
2700.15.0047.3435.3532.38
2800.15.0047.8935.7833.88
2900.15.0048.4136.2135.38
3000.15.0048.9236.6336.88

References

Go To: Top, Liquid Phase Heat Capacity (Shomate Equation), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]


Notes

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