potassium iodide
- Formula: IK
- Molecular weight: 166.0028
- IUPAC Standard InChI: InChI=1S/HI.K/h1H;/q;+1/p-1
- IUPAC Standard InChIKey: NLKNQRATVPKPDG-UHFFFAOYSA-M
- CAS Registry Number: 7681-11-0
- 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) | 2500. - 6000. |
|---|---|
| A | 8.940302 |
| B | 0.198002 |
| C | -0.000485 |
| D | 0.000042 |
| E | -0.011316 |
| F | -32.71231 |
| G | 72.42770 |
| H | -30.00000 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1967 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 2500. | 9.43 | 81.11 | 73.01 | 20.26 |
| 2600. | 9.45 | 81.48 | 73.33 | 21.20 |
| 2700. | 9.47 | 81.84 | 73.64 | 22.15 |
| 2800. | 9.49 | 82.19 | 73.94 | 23.10 |
| 2900. | 9.51 | 82.52 | 74.23 | 24.05 |
| 3000. | 9.53 | 82.84 | 74.51 | 25.00 |
| 3100. | 9.55 | 83.16 | 74.78 | 25.95 |
| 3200. | 9.57 | 83.46 | 75.05 | 26.91 |
| 3300. | 9.59 | 83.75 | 75.31 | 27.87 |
| 3400. | 9.61 | 84.04 | 75.56 | 28.83 |
| 3500. | 9.63 | 84.32 | 75.81 | 29.79 |
| 3600. | 9.65 | 84.59 | 76.05 | 30.75 |
| 3700. | 9.67 | 84.85 | 76.28 | 31.72 |
| 3800. | 9.69 | 85.11 | 76.51 | 32.69 |
| 3900. | 9.71 | 85.36 | 76.74 | 33.66 |
| 4000. | 9.73 | 85.61 | 76.95 | 34.63 |
| 4100. | 9.75 | 85.85 | 77.17 | 35.60 |
| 4200. | 9.77 | 86.09 | 77.38 | 36.58 |
| 4300. | 9.79 | 86.32 | 77.58 | 37.55 |
| 4400. | 9.81 | 86.54 | 77.78 | 38.53 |
| 4500. | 9.82 | 86.76 | 77.98 | 39.52 |
| 4600. | 9.84 | 86.98 | 78.17 | 40.50 |
| 4700. | 9.86 | 87.19 | 78.36 | 41.48 |
| 4800. | 9.88 | 87.40 | 78.55 | 42.47 |
| 4900. | 9.90 | 87.60 | 78.73 | 43.46 |
| 5000. | 9.92 | 87.80 | 78.91 | 44.45 |
| 5100. | 9.94 | 88.00 | 79.09 | 45.45 |
| 5200. | 9.96 | 88.19 | 79.26 | 46.44 |
| 5300. | 9.98 | 88.38 | 79.43 | 47.44 |
| 5400. | 10.00 | 88.57 | 79.60 | 48.44 |
| 5500. | 10.02 | 88.75 | 79.76 | 49.44 |
| 5600. | 10.04 | 88.93 | 79.93 | 50.44 |
| 5700. | 10.06 | 89.11 | 80.09 | 51.45 |
| 5800. | 10.08 | 89.29 | 80.24 | 52.45 |
| 5900. | 10.10 | 89.46 | 80.40 | 53.46 |
| 6000. | 10.12 | 89.63 | 80.55 | 54.47 |
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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