sodium carbonate
- Formula: CNa2O3
- Molecular weight: 105.9884
- CAS Registry Number: 497-19-8
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Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -264.940 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1966 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 37.383 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1966 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -270.261 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1966 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 33.172 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1966 |
Liquid Phase Heat Capacity (Shomate Equation)
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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1123.15 to 2500. |
|---|---|
| A | 45.29995 |
| B | -0.000002 |
| C | 3.665010×10-7 |
| D | -1.244049×10-9 |
| E | -6.869862×10-7 |
| F | -282.7581 |
| G | 81.97156 |
| H | -264.9402 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1966 |
Solid Phase Heat Capacity (Shomate Equation)
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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 723. | 723. to 1123. |
|---|---|---|
| A | 41.87404 | -255.0191 |
| B | -83.18786 | 590.1864 |
| C | 177.5985 | -437.1558 |
| D | -73.02844 | 120.8767 |
| E | -0.390588 | 23.94407 |
| F | -281.7830 | -145.1061 |
| G | 99.20196 | -324.1969 |
| H | -270.2605 | -270.2605 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in March, 1966 | Data last reviewed in March, 1966 |
Reaction thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
3 +
= CNa2O3 +
+
+
By formula: 3HNaO + C3H5ClO2 = CNa2O3 + C2H6O + ClNa + H2O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -77.27 ± 0.41 | kcal/mol | Cm | Davies, Finch, et al., 1980 | liquid phase; Heat of hydrolysis |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
- Not specified, most likely a prism, grating, or hybrid spectrometer.; (NO SPECTRUM, ONLY SCANNED IMAGE IS AVAILABLE)
- SOLID (NUJOL MULL); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
Data compiled by: Timothy J. Johnson, Tanya L. Myers, Yin-Fong Su, Russell G. Tonkyn, Molly Rose K. Kelly-Gorham, and Tyler O. Danby
References
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, IR Spectrum, NIST Free Links, NIST Subscription Links, 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]
Davies, Finch, et al., 1980
Davies, R.H.; Finch, A.; Gardner, P.J.,
The standard enthalpy of formation of liquid and gaseous ethylchloroformate (C3H5O2Cl),
J. Chem. Thermodyn., 1980, 12, 291-296. [all data]
Notes
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- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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