zirconium dioxide
- Formula: O2Zr
- Molecular weight: 123.223
- CAS Registry Number: 1314-23-4
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Condensed phase thermochemistry data
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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -244.541 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1965 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 17.84 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1965 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -262.299 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1965 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 12.03 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1965 |
Liquid 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) | 2950. to 5000. |
|---|---|
| A | 20.99993 |
| B | 0.000034 |
| C | -0.000006 |
| D | 4.321941×10-7 |
| E | 0.000094 |
| F | -255.2103 |
| G | 36.57768 |
| H | -244.5411 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1965 |
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 1478. | 1478. to 2950. |
|---|---|---|
| A | 16.53920 | 17.80000 |
| B | 2.043091 | 0.000000 |
| C | -0.206243 | 0.000000 |
| D | 0.058885 | 0.000000 |
| E | -0.330489 | 0.000000 |
| F | -268.4309 | -266.5710 |
| G | 29.58781 | 32.98870 |
| H | -262.3000 | -262.3000 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1965 | Data last reviewed in December, 1965 |
References
Go To: Top, Condensed phase thermochemistry data, 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, Condensed phase thermochemistry data, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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