beryllium acetylide
- Formula: CBe2
- Molecular weight: 30.0351
- CAS Registry Number: 506-66-1
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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 | -15.89 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1963 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 47.48 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1963 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -90.79 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1963 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 16.33 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1963 |
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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 2400. to 3500. |
|---|---|
| A | 92.04790 |
| B | 0.000092 |
| C | -0.000027 |
| D | 0.000003 |
| E | 0.000044 |
| F | -72.68010 |
| G | 109.0320 |
| H | -15.89260 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1963 |
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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 700. | 700. to 2400. |
|---|---|---|
| A | -223.5490 | -118.4450 |
| B | 1305.050 | 287.4560 |
| C | -2270.970 | -135.3620 |
| D | 1386.180 | 21.50990 |
| E | 3.808680 | 18.37120 |
| F | -52.04400 | -17.71140 |
| G | -533.1850 | -135.6510 |
| H | -90.79280 | -90.79280 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1963 | Data last reviewed in June, 1963 |
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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