Sodium cyanide
- Formula: C2N2Na2
- Molecular weight: 98.0143
- IUPAC Standard InChI: InChI=1S/CN.Na/c1-2;/q-1;+1
- IUPAC Standard InChIKey: MNWBNISUBARLIT-UHFFFAOYSA-N
- CAS Registry Number: 55186-09-9
- 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. to 600. | 600. to 6000. |
|---|---|---|
| A | 120.6958 | 119.9770 |
| B | -32.95005 | 8.453522 |
| C | 69.58871 | -1.916930 |
| D | -33.74191 | 0.144902 |
| E | -0.753610 | -3.013481 |
| F | -46.38257 | -53.15939 |
| G | 495.9546 | 477.9634 |
| H | -8.786024 | -8.786024 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in March, 1966 | 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) |
|---|---|---|---|---|
| 298. | 107.7 | 347.0 | 347.1 | -0.02 |
| 300. | 107.8 | 347.8 | 347.1 | 0.20 |
| 400. | 111.8 | 379.4 | 351.4 | 11.20 |
| 500. | 114.4 | 404.6 | 359.6 | 22.51 |
| 600. | 116.6 | 425.7 | 368.9 | 34.06 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 600. | 116.0 | 425.6 | 368.9 | 34.02 |
| 700. | 118.9 | 443.7 | 378.3 | 45.78 |
| 800. | 120.9 | 459.7 | 387.5 | 57.77 |
| 900. | 122.4 | 474.0 | 396.3 | 69.94 |
| 1000. | 123.6 | 487.0 | 404.8 | 82.24 |
| 1100. | 124.7 | 498.8 | 412.8 | 94.66 |
| 1200. | 125.5 | 509.7 | 420.4 | 107.2 |
| 1300. | 126.3 | 519.8 | 427.7 | 119.8 |
| 1400. | 126.9 | 529.2 | 434.6 | 132.4 |
| 1500. | 127.5 | 538.0 | 441.2 | 145.1 |
| 1600. | 128.0 | 546.2 | 447.5 | 157.9 |
| 1700. | 128.5 | 554.0 | 453.6 | 170.7 |
| 1800. | 128.9 | 561.3 | 459.3 | 183.6 |
| 1900. | 129.3 | 568.3 | 464.9 | 196.5 |
| 2000. | 129.6 | 575.0 | 470.2 | 209.5 |
| 2100. | 129.9 | 581.3 | 475.4 | 222.4 |
| 2200. | 130.2 | 587.3 | 480.3 | 235.4 |
| 2300. | 130.5 | 593.1 | 485.1 | 248.5 |
| 2400. | 130.7 | 598.7 | 489.7 | 261.5 |
| 2500. | 130.9 | 604.0 | 494.2 | 274.6 |
| 2600. | 131.1 | 609.2 | 498.5 | 287.7 |
| 2700. | 131.3 | 614.1 | 502.7 | 300.8 |
| 2800. | 131.4 | 618.9 | 506.8 | 314.0 |
| 2900. | 131.5 | 623.5 | 510.7 | 327.1 |
| 3000. | 131.7 | 628.0 | 514.5 | 340.3 |
| 3100. | 131.8 | 632.3 | 518.3 | 353.5 |
| 3200. | 131.9 | 636.5 | 521.9 | 366.6 |
| 3300. | 131.9 | 640.5 | 525.4 | 379.8 |
| 3400. | 132.0 | 644.5 | 528.9 | 393.0 |
| 3500. | 132.0 | 648.3 | 532.2 | 406.2 |
| 3600. | 132.1 | 652.0 | 535.5 | 419.4 |
| 3700. | 132.1 | 655.6 | 538.7 | 432.6 |
| 3800. | 132.2 | 659.2 | 541.8 | 445.9 |
| 3900. | 132.2 | 662.6 | 544.9 | 459.1 |
| 4000. | 132.2 | 666.0 | 547.9 | 472.3 |
| 4100. | 132.2 | 669.2 | 550.8 | 485.5 |
| 4200. | 132.2 | 672.4 | 553.7 | 498.7 |
| 4300. | 132.2 | 675.5 | 556.5 | 512.0 |
| 4400. | 132.2 | 678.6 | 559.2 | 525.2 |
| 4500. | 132.3 | 681.5 | 561.9 | 538.4 |
| 4600. | 132.3 | 684.4 | 564.5 | 551.6 |
| 4700. | 132.3 | 687.3 | 567.1 | 564.9 |
| 4800. | 132.3 | 690.1 | 569.6 | 578.1 |
| 4900. | 132.3 | 692.8 | 572.1 | 591.3 |
| 5000. | 132.3 | 695.5 | 574.6 | 604.6 |
| 5100. | 132.3 | 698.1 | 576.9 | 617.8 |
| 5200. | 132.4 | 700.7 | 579.3 | 631.0 |
| 5300. | 132.4 | 703.2 | 581.6 | 644.3 |
| 5400. | 132.4 | 705.6 | 583.9 | 657.5 |
| 5500. | 132.5 | 708.1 | 586.1 | 670.7 |
| 5600. | 132.6 | 710.5 | 588.3 | 684.0 |
| 5700. | 132.6 | 712.8 | 590.5 | 697.3 |
| 5800. | 132.7 | 715.1 | 592.6 | 710.5 |
| 5900. | 132.8 | 717.4 | 594.7 | 723.8 |
| 6000. | 132.9 | 719.6 | 596.8 | 737.1 |
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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