Tetracarbon
- Formula: C4
- Molecular weight: 48.0428
- IUPAC Standard InChI: InChI=1S/C4/c1-3-2-4(1)3
- IUPAC Standard InChIKey: BEMJFDKMIISOFB-UHFFFAOYSA-N
- CAS Registry Number: 12184-80-4
- 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) | 298. - 1200. | 1200. - 6000. |
|---|---|---|
| A | 34.86640 | 84.02309 |
| B | 84.34818 | 1.746470 |
| C | -55.64804 | -0.340843 |
| D | 13.82762 | 0.022954 |
| E | -0.468144 | -8.928448 |
| F | 955.4373 | 924.1703 |
| G | 245.0837 | 300.4342 |
| H | 970.6880 | 970.6880 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1969 | Data last reviewed in December, 1969 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 298. | 50.15 | 228.3 | 228.3 | -0.01 |
| 300. | 50.33 | 228.6 | 228.3 | 0.09 |
| 400. | 57.66 | 244.2 | 230.4 | 5.52 |
| 500. | 62.98 | 257.6 | 234.5 | 11.56 |
| 600. | 67.13 | 269.5 | 239.4 | 18.07 |
| 700. | 70.43 | 280.1 | 244.5 | 24.96 |
| 800. | 73.08 | 289.7 | 249.5 | 32.14 |
| 900. | 75.21 | 298.4 | 254.5 | 39.56 |
| 1000. | 76.93 | 306.5 | 259.3 | 47.17 |
| 1100. | 78.33 | 313.9 | 263.9 | 54.93 |
| 1200. | 79.52 | 320.7 | 268.4 | 62.82 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 1200. | 79.47 | 320.7 | 268.4 | 62.82 |
| 1300. | 80.48 | 327.1 | 272.6 | 70.82 |
| 1400. | 81.31 | 333.1 | 276.7 | 78.91 |
| 1500. | 81.99 | 338.7 | 280.7 | 87.08 |
| 1600. | 82.55 | 344.1 | 284.5 | 95.31 |
| 1700. | 83.03 | 349.1 | 288.1 | 103.6 |
| 1800. | 83.44 | 353.8 | 291.7 | 111.9 |
| 1900. | 83.80 | 358.4 | 295.1 | 120.3 |
| 2000. | 84.10 | 362.7 | 298.3 | 128.7 |
| 2100. | 84.38 | 366.8 | 301.5 | 137.1 |
| 2200. | 84.62 | 370.7 | 304.5 | 145.5 |
| 2300. | 84.83 | 374.5 | 307.5 | 154.0 |
| 2400. | 85.02 | 378.1 | 310.4 | 162.5 |
| 2500. | 85.19 | 381.6 | 313.2 | 171.0 |
| 2600. | 85.34 | 384.9 | 315.8 | 179.5 |
| 2700. | 85.48 | 388.1 | 318.5 | 188.1 |
| 2800. | 85.61 | 391.2 | 321.0 | 196.6 |
| 2900. | 85.72 | 394.2 | 323.5 | 205.2 |
| 3000. | 85.82 | 397.2 | 325.9 | 213.8 |
| 3100. | 85.92 | 400.0 | 328.2 | 222.4 |
| 3200. | 86.00 | 402.7 | 330.5 | 231.0 |
| 3300. | 86.08 | 405.3 | 332.7 | 239.6 |
| 3400. | 86.15 | 407.9 | 334.9 | 248.2 |
| 3500. | 86.22 | 410.4 | 337.0 | 256.8 |
| 3600. | 86.28 | 412.8 | 339.1 | 265.4 |
| 3700. | 86.33 | 415.2 | 341.1 | 274.1 |
| 3800. | 86.38 | 417.5 | 343.1 | 282.7 |
| 3900. | 86.42 | 419.8 | 345.1 | 291.3 |
| 4000. | 86.47 | 421.9 | 346.9 | 300.0 |
| 4100. | 86.50 | 424.1 | 348.8 | 308.6 |
| 4200. | 86.54 | 426.2 | 350.6 | 317.3 |
| 4300. | 86.57 | 428.2 | 352.4 | 325.9 |
| 4400. | 86.60 | 430.2 | 354.1 | 334.6 |
| 4500. | 86.63 | 432.1 | 355.9 | 343.3 |
| 4600. | 86.66 | 434.0 | 357.5 | 351.9 |
| 4700. | 86.68 | 435.9 | 359.2 | 360.6 |
| 4800. | 86.70 | 437.7 | 360.8 | 369.3 |
| 4900. | 86.73 | 439.5 | 362.4 | 377.9 |
| 5000. | 86.75 | 441.3 | 364.0 | 386.6 |
| 5100. | 86.77 | 443.0 | 365.5 | 395.3 |
| 5200. | 86.79 | 444.7 | 367.0 | 404.0 |
| 5300. | 86.80 | 446.3 | 368.5 | 412.6 |
| 5400. | 86.82 | 448.0 | 369.9 | 421.3 |
| 5500. | 86.84 | 449.5 | 371.4 | 430.0 |
| 5600. | 86.86 | 451.1 | 372.8 | 438.7 |
| 5700. | 86.88 | 452.6 | 374.2 | 447.4 |
| 5800. | 86.90 | 454.2 | 375.5 | 456.1 |
| 5900. | 86.92 | 455.6 | 376.9 | 464.7 |
| 6000. | 86.94 | 457.1 | 378.2 | 473.4 |
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
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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