Sodium hydroxide
- Formula: H2Na2O2
- Molecular weight: 79.9942
- IUPAC Standard InChI: InChI=1S/Na.H2O/h;1H2/q+1;/p-1
- IUPAC Standard InChIKey: HEMHJVSKTPXQMS-UHFFFAOYSA-M
- CAS Registry Number: 54251-09-1
- 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 1200. | 1200. to 6000. |
|---|---|---|
| A | 49.84441 | 112.9697 |
| B | 126.8911 | 10.10486 |
| C | -93.43792 | -1.897127 |
| D | 27.11897 | 0.124278 |
| E | -0.073674 | -12.11703 |
| F | -627.4954 | -667.9338 |
| G | 333.3782 | 407.4655 |
| H | -607.5168 | -607.5168 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1970 | Data last reviewed in December, 1970 |
| 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. | 79.25 | 307.4 | 307.4 | -0.01 |
| 300. | 79.42 | 307.9 | 307.4 | 0.14 |
| 400. | 86.93 | 331.8 | 310.6 | 8.47 |
| 500. | 93.03 | 351.9 | 316.9 | 17.48 |
| 600. | 97.99 | 369.3 | 324.2 | 27.04 |
| 700. | 102.0 | 384.7 | 331.8 | 37.05 |
| 800. | 105.3 | 398.6 | 339.3 | 47.42 |
| 900. | 108.0 | 411.1 | 346.6 | 58.10 |
| 1000. | 110.3 | 422.6 | 353.6 | 69.02 |
| 1100. | 112.4 | 433.2 | 360.4 | 80.16 |
| 1200. | 114.4 | 443.1 | 366.9 | 91.50 |
| 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. | 114.2 | 443.1 | 366.9 | 91.49 |
| 1300. | 116.0 | 452.3 | 373.1 | 103.0 |
| 1400. | 117.6 | 461.0 | 379.1 | 114.7 |
| 1500. | 118.9 | 469.1 | 384.8 | 126.5 |
| 1600. | 120.1 | 476.8 | 390.3 | 138.5 |
| 1700. | 121.1 | 484.1 | 395.6 | 150.5 |
| 1800. | 122.0 | 491.1 | 400.7 | 162.7 |
| 1900. | 122.8 | 497.7 | 405.7 | 174.9 |
| 2000. | 123.6 | 504.0 | 410.4 | 187.2 |
| 2100. | 124.2 | 510.1 | 415.0 | 199.6 |
| 2200. | 124.8 | 515.9 | 419.5 | 212.1 |
| 2300. | 125.4 | 521.4 | 423.8 | 224.6 |
| 2400. | 125.9 | 526.8 | 428.0 | 237.1 |
| 2500. | 126.4 | 531.9 | 432.0 | 249.8 |
| 2600. | 126.8 | 536.9 | 436.0 | 262.4 |
| 2700. | 127.2 | 541.7 | 439.8 | 275.1 |
| 2800. | 127.6 | 546.3 | 443.5 | 287.9 |
| 2900. | 127.9 | 550.8 | 447.1 | 300.6 |
| 3000. | 128.2 | 555.1 | 450.7 | 313.4 |
| 3100. | 128.5 | 559.4 | 454.1 | 326.3 |
| 3200. | 128.8 | 563.4 | 457.5 | 339.1 |
| 3300. | 129.0 | 567.4 | 460.7 | 352.0 |
| 3400. | 129.2 | 571.3 | 463.9 | 364.9 |
| 3500. | 129.4 | 575.0 | 467.0 | 377.9 |
| 3600. | 129.6 | 578.7 | 470.1 | 390.8 |
| 3700. | 129.8 | 582.2 | 473.1 | 403.8 |
| 3800. | 130.0 | 585.7 | 476.0 | 416.8 |
| 3900. | 130.1 | 589.1 | 478.8 | 429.8 |
| 4000. | 130.2 | 592.3 | 481.6 | 442.8 |
| 4100. | 130.4 | 595.6 | 484.4 | 455.8 |
| 4200. | 130.5 | 598.7 | 487.1 | 468.9 |
| 4300. | 130.6 | 601.8 | 489.7 | 481.9 |
| 4400. | 130.7 | 604.8 | 492.3 | 495.0 |
| 4500. | 130.8 | 607.7 | 494.8 | 508.1 |
| 4600. | 130.8 | 610.6 | 497.3 | 521.1 |
| 4700. | 130.9 | 613.4 | 499.7 | 534.2 |
| 4800. | 131.0 | 616.2 | 502.1 | 547.3 |
| 4900. | 131.1 | 618.9 | 504.5 | 560.4 |
| 5000. | 131.1 | 621.5 | 506.8 | 573.5 |
| 5100. | 131.2 | 624.1 | 509.1 | 586.7 |
| 5200. | 131.2 | 626.7 | 511.3 | 599.8 |
| 5300. | 131.3 | 629.2 | 513.5 | 612.9 |
| 5400. | 131.4 | 631.6 | 515.7 | 626.0 |
| 5500. | 131.4 | 634.0 | 517.8 | 639.2 |
| 5600. | 131.5 | 636.4 | 519.9 | 652.3 |
| 5700. | 131.6 | 638.7 | 522.0 | 665.5 |
| 5800. | 131.6 | 641.0 | 524.0 | 678.6 |
| 5900. | 131.7 | 643.3 | 526.0 | 691.8 |
| 6000. | 131.8 | 645.5 | 528.0 | 705.0 |
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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