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niobium pentabromide


Gas 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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 900. - 6000.
A 132.7270
B 0.265533
C -0.073214
D 0.006324
E -0.627136
F -485.2780
G 606.2650
H -443.5880
ReferenceChase, 1998
Comment Data last reviewed in December, 1974
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
900.132.1592.9505.678.55
1000.132.3606.8515.091.77
1100.132.4619.4524.0105.0
1200.132.5631.0532.4118.3
1300.132.6641.6540.4131.5
1400.132.7651.4548.0144.8
1500.132.7660.5555.2158.0
1600.132.7669.1562.0171.3
1700.132.8677.2568.6184.6
1800.132.8684.7574.8197.9
1900.132.8691.9580.8211.2
2000.132.9698.7586.5224.4
2100.132.9705.2592.0237.7
2200.132.9711.4597.3251.0
2300.132.9717.3602.4264.3
2400.132.9723.0607.3277.6
2500.132.9728.4612.0290.9
2600.132.9733.6616.6304.2
2700.132.9738.6621.0317.5
2800.133.0743.5625.3330.8
2900.133.0748.1629.5344.1
3000.133.0752.6633.5357.4
3100.133.0757.0637.4370.7
3200.133.0761.2641.2384.0
3300.133.0765.3644.9397.3
3400.133.0769.3648.5410.6
3500.133.0773.1652.0423.9
3600.133.0776.9655.5437.1
3700.133.0780.5658.8450.4
3800.133.0784.1662.0463.7
3900.133.0787.5665.2477.0
4000.133.0790.9668.3490.3
4100.133.0794.2671.3503.6
4200.133.0797.4674.3516.9
4300.133.0800.5677.2530.2
4400.133.0803.6680.0543.5
4500.133.0806.6682.8556.8
4600.133.0809.5685.5570.1
4700.133.0812.3688.2583.4
4800.133.0815.1690.8596.7
4900.133.0817.9693.4610.0
5000.133.0820.6695.9623.3
5100.133.0823.2698.4636.6
5200.133.0825.8700.8649.9
5300.133.0828.3703.2663.2
5400.133.0830.8705.5676.5
5500.133.0833.2707.8689.8
5600.133.0835.6710.1703.1
5700.133.0838.0712.3716.4
5800.133.0840.3714.5729.7
5900.133.0842.6716.6743.0
6000.133.0844.8718.8756.3

References

Go To: Top, Gas 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

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References