Calcium
- Formula: Ca2
- Molecular weight: 80.156
- IUPAC Standard InChI: InChI=1S/2Ca
- IUPAC Standard InChIKey: CPGKMLVTFNUAHL-UHFFFAOYSA-N
- CAS Registry Number: 12595-85-6
- Chemical structure:
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Gas 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. - 1000. | 1000. - 6000. |
|---|---|---|
| A | 14.43220 | 5.439922 |
| B | -26.22591 | -0.364820 |
| C | 27.02641 | 0.076231 |
| D | -9.773571 | -0.000716 |
| E | -0.000842 | 0.298975 |
| F | 78.29431 | 81.19469 |
| G | 85.63490 | 70.14011 |
| H | 81.65330 | 81.65330 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in September, 1983 | 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. | 8.75 | 61.47 | 61.47 | -0.00 |
| 300. | 8.72 | 61.52 | 61.47 | 0.02 |
| 400. | 7.64 | 63.88 | 61.80 | 0.83 |
| 500. | 6.85 | 65.49 | 62.38 | 1.55 |
| 600. | 6.31 | 66.69 | 63.01 | 2.21 |
| 700. | 5.96 | 67.63 | 63.60 | 2.82 |
| 800. | 5.74 | 68.41 | 64.16 | 3.41 |
| 900. | 5.59 | 69.08 | 64.67 | 3.97 |
| 1000. | 5.46 | 69.66 | 65.14 | 4.53 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 1000. | 5.45 | 69.66 | 65.14 | 4.53 |
| 1100. | 5.38 | 70.18 | 65.57 | 5.07 |
| 1200. | 5.32 | 70.64 | 65.98 | 5.60 |
| 1300. | 5.27 | 71.07 | 66.35 | 6.13 |
| 1400. | 5.23 | 71.46 | 66.70 | 6.66 |
| 1500. | 5.19 | 71.82 | 67.03 | 7.18 |
| 1600. | 5.17 | 72.15 | 67.34 | 7.69 |
| 1700. | 5.14 | 72.46 | 67.63 | 8.21 |
| 1800. | 5.12 | 72.76 | 67.91 | 8.72 |
| 1900. | 5.10 | 73.03 | 68.17 | 9.23 |
| 2000. | 5.08 | 73.29 | 68.42 | 9.74 |
| 2100. | 5.07 | 73.54 | 68.66 | 10.25 |
| 2200. | 5.06 | 73.78 | 68.89 | 10.76 |
| 2300. | 5.05 | 74.00 | 69.11 | 11.26 |
| 2400. | 5.05 | 74.22 | 69.31 | 11.77 |
| 2500. | 5.04 | 74.42 | 69.51 | 12.27 |
| 2600. | 5.04 | 74.62 | 69.71 | 12.78 |
| 2700. | 5.04 | 74.81 | 69.89 | 13.28 |
| 2800. | 5.04 | 74.99 | 70.07 | 13.78 |
| 2900. | 5.04 | 75.17 | 70.24 | 14.29 |
| 3000. | 5.05 | 75.34 | 70.41 | 14.79 |
| 3100. | 5.05 | 75.51 | 70.57 | 15.30 |
| 3200. | 5.06 | 75.67 | 70.73 | 15.80 |
| 3300. | 5.07 | 75.82 | 70.88 | 16.31 |
| 3400. | 5.08 | 75.98 | 71.03 | 16.82 |
| 3500. | 5.09 | 76.12 | 71.17 | 17.32 |
| 3600. | 5.10 | 76.27 | 71.31 | 17.83 |
| 3700. | 5.12 | 76.41 | 71.45 | 18.34 |
| 3800. | 5.14 | 76.54 | 71.58 | 18.86 |
| 3900. | 5.15 | 76.68 | 71.71 | 19.37 |
| 4000. | 5.17 | 76.81 | 71.84 | 19.89 |
| 4100. | 5.19 | 76.94 | 71.96 | 20.41 |
| 4200. | 5.22 | 77.06 | 72.08 | 20.93 |
| 4300. | 5.24 | 77.18 | 72.20 | 21.45 |
| 4400. | 5.26 | 77.30 | 72.31 | 21.98 |
| 4500. | 5.29 | 77.42 | 72.42 | 22.50 |
| 4600. | 5.32 | 77.54 | 72.53 | 23.03 |
| 4700. | 5.35 | 77.65 | 72.64 | 23.57 |
| 4800. | 5.38 | 77.77 | 72.75 | 24.10 |
| 4900. | 5.41 | 77.88 | 72.85 | 24.64 |
| 5000. | 5.44 | 77.99 | 72.95 | 25.19 |
| 5100. | 5.48 | 78.10 | 73.05 | 25.73 |
| 5200. | 5.51 | 78.20 | 73.15 | 26.28 |
| 5300. | 5.55 | 78.31 | 73.25 | 26.83 |
| 5400. | 5.59 | 78.41 | 73.34 | 27.39 |
| 5500. | 5.63 | 78.52 | 73.43 | 27.95 |
| 5600. | 5.67 | 78.62 | 73.53 | 28.52 |
| 5700. | 5.71 | 78.72 | 73.62 | 29.09 |
| 5800. | 5.76 | 78.82 | 73.70 | 29.66 |
| 5900. | 5.80 | 78.92 | 73.79 | 30.24 |
| 6000. | 5.85 | 79.01 | 73.88 | 30.82 |
References
Go To: Top, Gas 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, Gas Phase Heat Capacity (Shomate Equation), References
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