calcium
- Formula: Ca
- Molecular weight: 40.078
- IUPAC Standard InChIKey: OYPRJOBELJOOCE-UHFFFAOYSA-N
- CAS Registry Number: 7440-70-2
- Chemical structure:
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Solid 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 (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 1100. | 298. to 716. | 716. to 1115. |
---|---|---|---|
A | 4.726380 | 2.657111 | -9.712680 |
B | 2.415902 | 9.207371 | 30.30031 |
C | 3.466392 | -2.125100 | -16.66800 |
D | -1.321581 | -2.298831 | 4.285761 |
E | 0.042551 | 0.093654 | 1.292901 |
F | -1.401290 | -0.612692 | 5.853710 |
G | 15.03730 | 11.40500 | -3.745930 |
H | 0.000000 | 0.252390 | 0.252390 |
Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 |
Comment | α phase; Data last reviewed in September, 1983 | β phase; Data last reviewed in September, 1983 | β phase; Data last reviewed in September, 1983 |
Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
---|---|---|---|---|
298. | 6.20 | 9.94 | 9.94 | -0.00 |
300. | 6.20 | 9.98 | 9.94 | 0.01 |
400. | 6.43 | 11.79 | 10.18 | 0.64 |
500. | 6.81 | 13.26 | 10.66 | 1.30 |
600. | 7.26 | 14.54 | 11.20 | 2.01 |
700. | 7.75 | 15.70 | 11.76 | 2.76 |
800. | 8.27 | 16.77 | 12.32 | 3.56 |
900. | 8.80 | 17.77 | 12.87 | 4.41 |
1000. | 9.33 | 18.72 | 13.41 | 5.32 |
1100. | 9.85 | 19.64 | 13.93 | 6.27 |
Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
---|---|---|---|---|
298. | 6.21 | 10.29 | 10.30 | -0.00 |
300. | 6.21 | 10.33 | 10.30 | 0.01 |
400. | 6.44 | 12.14 | 10.54 | 0.64 |
500. | 6.82 | 13.62 | 11.01 | 1.30 |
600. | 7.18 | 14.89 | 11.56 | 2.00 |
700. | 7.46 | 16.02 | 12.11 | 2.74 |
Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
---|---|---|---|---|
716. | 7.53 | 16.18 | 12.20 | 2.85 |
800. | 8.07 | 17.05 | 12.67 | 3.51 |
900. | 8.78 | 18.04 | 13.21 | 4.35 |
1000. | 9.50 | 19.00 | 13.74 | 5.26 |
1100. | 10.22 | 19.94 | 14.26 | 6.25 |
References
Go To: Top, Solid 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, Solid Phase Heat Capacity (Shomate Equation), References
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