tantalum
- Formula: Ta
- Molecular weight: 180.94788
- IUPAC Standard InChI: InChI=1S/Ta
- IUPAC Standard InChIKey: GUVRBAGPIYLISA-UHFFFAOYSA-N
- CAS Registry Number: 7440-25-7
- Chemical structure:
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- Information on this page:
- Other data available:
- Data at other public NIST sites:
- NIST Atomic Spectra Database - Lines Holdings (on physics web site)
- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
- NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
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Liquid Phase Heat Capacity (Shomate Equation)
Go To: Top, References, Notes
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) | 3258. to 5778.07 |
|---|---|
| A | 41.84000 |
| B | 2.444792×10-8 |
| C | -4.832814×10-9 |
| D | 3.272579×10-10 |
| E | 5.242719×10-8 |
| F | -6.182990 |
| G | 73.06226 |
| H | 30.79503 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1972 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 3258. | 41.84 | 122.5 | 91.99 | 99.34 |
| 3300. | 41.84 | 123.0 | 92.38 | 101.1 |
| 3400. | 41.84 | 124.3 | 93.30 | 105.3 |
| 3500. | 41.84 | 125.5 | 94.20 | 109.5 |
| 3600. | 41.84 | 126.7 | 95.09 | 113.6 |
| 3700. | 41.84 | 127.8 | 95.96 | 117.8 |
| 3800. | 41.84 | 128.9 | 96.81 | 122.0 |
| 3900. | 41.84 | 130.0 | 97.65 | 126.2 |
| 4000. | 41.84 | 131.1 | 98.47 | 130.4 |
| 4100. | 41.84 | 132.1 | 99.28 | 134.6 |
| 4200. | 41.84 | 133.1 | 100.1 | 138.7 |
| 4300. | 41.84 | 134.1 | 100.9 | 142.9 |
| 4400. | 41.84 | 135.1 | 101.6 | 147.1 |
| 4500. | 41.84 | 136.0 | 102.4 | 151.3 |
| 4600. | 41.84 | 136.9 | 103.1 | 155.5 |
| 4700. | 41.84 | 137.8 | 103.8 | 159.7 |
| 4800. | 41.84 | 138.7 | 104.6 | 163.9 |
| 4900. | 41.84 | 139.6 | 105.3 | 168.0 |
| 5000. | 41.84 | 140.4 | 106.0 | 172.2 |
| 5100. | 41.84 | 141.2 | 106.6 | 176.4 |
| 5200. | 41.84 | 142.0 | 107.3 | 180.6 |
| 5300. | 41.84 | 142.8 | 108.0 | 184.8 |
| 5400. | 41.84 | 143.6 | 108.6 | 189.0 |
| 5500. | 41.84 | 144.4 | 109.3 | 193.1 |
| 5600. | 41.84 | 145.1 | 109.9 | 197.3 |
| 5700. | 41.84 | 145.9 | 110.5 | 201.5 |
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
Go To: Top, Liquid Phase Heat Capacity (Shomate Equation), References
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