potassium cyanide
- Formula: CKN
- Molecular weight: 65.1157
- CAS Registry Number: 151-50-8
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Gas Phase Heat Capacity (Shomate Equation)
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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) | 3000. - 6000. |
|---|---|
| A | 61.26590 |
| B | 0.509972 |
| C | -0.089375 |
| D | 0.005515 |
| E | -4.709570 |
| F | 51.84110 |
| G | 315.8810 |
| H | 79.49600 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1966 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 3000. | 61.62 | 384.6 | 331.5 | 159.3 |
| 3100. | 61.66 | 386.6 | 333.3 | 165.5 |
| 3200. | 61.70 | 388.6 | 335.0 | 171.6 |
| 3300. | 61.74 | 390.5 | 336.6 | 177.8 |
| 3400. | 61.78 | 392.3 | 338.2 | 184.0 |
| 3500. | 61.81 | 394.1 | 339.8 | 190.2 |
| 3600. | 61.84 | 395.9 | 341.3 | 196.4 |
| 3700. | 61.86 | 397.6 | 342.8 | 202.5 |
| 3800. | 61.89 | 399.2 | 344.3 | 208.7 |
| 3900. | 61.91 | 400.8 | 345.7 | 214.9 |
| 4000. | 61.93 | 402.4 | 347.1 | 221.1 |
| 4100. | 61.95 | 403.9 | 348.5 | 227.3 |
| 4200. | 61.97 | 405.4 | 349.8 | 233.5 |
| 4300. | 61.99 | 406.9 | 351.1 | 239.7 |
| 4400. | 62.01 | 408.3 | 352.4 | 245.9 |
| 4500. | 62.02 | 409.7 | 353.7 | 252.1 |
| 4600. | 62.03 | 411.1 | 354.9 | 258.3 |
| 4700. | 62.05 | 412.4 | 356.1 | 264.5 |
| 4800. | 62.06 | 413.7 | 357.3 | 270.7 |
| 4900. | 62.07 | 415.0 | 358.5 | 276.9 |
| 5000. | 62.08 | 416.2 | 359.6 | 283.1 |
| 5100. | 62.09 | 417.5 | 360.7 | 289.3 |
| 5200. | 62.10 | 418.7 | 361.8 | 295.5 |
| 5300. | 62.11 | 419.9 | 362.9 | 301.8 |
| 5400. | 62.12 | 421.0 | 364.0 | 308.0 |
| 5500. | 62.13 | 422.2 | 365.0 | 314.2 |
| 5600. | 62.14 | 423.3 | 366.1 | 320.4 |
| 5700. | 62.15 | 424.4 | 367.1 | 326.6 |
| 5800. | 62.15 | 425.5 | 368.1 | 332.8 |
| 5900. | 62.16 | 426.5 | 369.1 | 339.0 |
| 6000. | 62.17 | 427.6 | 370.0 | 345.3 |
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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