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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 2500. - 6000. |
|---|---|
| A | 37.40622 |
| B | 0.828440 |
| C | -0.002031 |
| D | 0.000174 |
| E | -0.047344 |
| F | -136.8683 |
| G | 303.0375 |
| H | -125.5200 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1967 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 2500. | 39.46 | 339.4 | 305.5 | 84.77 |
| 2600. | 39.54 | 340.9 | 306.8 | 88.72 |
| 2700. | 39.63 | 342.4 | 308.1 | 92.67 |
| 2800. | 39.71 | 343.9 | 309.4 | 96.64 |
| 2900. | 39.79 | 345.3 | 310.6 | 100.6 |
| 3000. | 39.87 | 346.6 | 311.7 | 104.6 |
| 3100. | 39.96 | 347.9 | 312.9 | 108.6 |
| 3200. | 40.04 | 349.2 | 314.0 | 112.6 |
| 3300. | 40.12 | 350.4 | 315.1 | 116.6 |
| 3400. | 40.20 | 351.6 | 316.1 | 120.6 |
| 3500. | 40.28 | 352.8 | 317.2 | 124.6 |
| 3600. | 40.37 | 353.9 | 318.2 | 128.7 |
| 3700. | 40.45 | 355.0 | 319.2 | 132.7 |
| 3800. | 40.53 | 356.1 | 320.1 | 136.8 |
| 3900. | 40.61 | 357.2 | 321.1 | 140.8 |
| 4000. | 40.70 | 358.2 | 322.0 | 144.9 |
| 4100. | 40.78 | 359.2 | 322.9 | 149.0 |
| 4200. | 40.86 | 360.2 | 323.7 | 153.0 |
| 4300. | 40.94 | 361.1 | 324.6 | 157.1 |
| 4400. | 41.02 | 362.1 | 325.4 | 161.2 |
| 4500. | 41.11 | 363.0 | 326.3 | 165.3 |
| 4600. | 41.19 | 363.9 | 327.1 | 169.4 |
| 4700. | 41.27 | 364.8 | 327.9 | 173.6 |
| 4800. | 41.35 | 365.7 | 328.7 | 177.7 |
| 4900. | 41.44 | 366.5 | 329.4 | 181.8 |
| 5000. | 41.52 | 367.4 | 330.2 | 186.0 |
| 5100. | 41.60 | 368.2 | 330.9 | 190.1 |
| 5200. | 41.68 | 369.0 | 331.6 | 194.3 |
| 5300. | 41.76 | 369.8 | 332.3 | 198.5 |
| 5400. | 41.85 | 370.6 | 333.0 | 202.7 |
| 5500. | 41.93 | 371.3 | 333.7 | 206.9 |
| 5600. | 42.01 | 372.1 | 334.4 | 211.0 |
| 5700. | 42.09 | 372.8 | 335.1 | 215.3 |
| 5800. | 42.18 | 373.6 | 335.7 | 219.5 |
| 5900. | 42.26 | 374.3 | 336.4 | 223.7 |
| 6000. | 42.34 | 375.0 | 337.0 | 227.9 |
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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