Rutile (TiO2)
- Formula: O2Ti
- Molecular weight: 79.866
- CAS Registry Number: 1317-80-2
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Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | -225.6 ± 0.2 | kcal/mol | Review | Cox, Wagman, et al., 1984 | rutile phase; CODATA Review value |
| ΔfH°solid | -224.36 | kcal/mol | Review | Chase, 1998 | rutile phase; Data last reviewed in December, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 12.10 ± 0.072 | cal/mol*K | Review | Cox, Wagman, et al., 1984 | rutile phase; CODATA Review value |
Solid Phase Heat Capacity (Shomate Equation)
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) | 298. to 2000. |
|---|---|
| A | 16.08468 |
| B | 4.471654 |
| C | -2.767448 |
| D | 0.585459 |
| E | -0.355036 |
| F | -230.5244 |
| G | 28.16993 |
| H | -224.3599 |
| Reference | Chase, 1998 |
| Comment | rutile phase; Data last reviewed in December, 1973 |
References
Go To: Top, Condensed phase thermochemistry data, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A.,
CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]
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, Condensed phase thermochemistry data, NIST Free Links, References
- Symbols used in this document:
S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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