Equal volumes, 50.0 mL, of 3.0 M hydrochloric acid and 3.0 M sodium hydroxide solutions having an initial temperature of 20.0°C react in a calorimeter. The resultant solution records a temperature of 40.0°C. The heat gained by the resultant solution can be calculated using. Sodium hydroxide, also known as lye. Heat capacity (C) 59.5 J/mol K Std molar entropy (S o 298). Specific foods processed with sodium hydroxide include. Go To: Top, Solid Phase Heat Capacity (Shomate Equation), References Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of. The DOW reference is good because they make Sodium Hydroxide. A good library reference on chemicals is Perry's Handbook of Chemical Engineering. It has a table of Sodium Hydroxide heat capacities for solutions. And NO, the density of a solution is NOT the same as water unless it is very dilute. Swampie777 ( Chemical Engineer).
- Formula: HNaO
- Molecular weight: 39.9971
- IUPAC Standard InChI:
- InChI=1S/Na.H2O/h;1H2/q+1;/p-1
- Download the identifier in a file.
- IUPAC Standard InChIKey:HEMHJVSKTPXQMS-UHFFFAOYSA-M
- CAS Registry Number: 1310-73-2
- Chemical structure:
This structure is also available as a 2d Mol fileor as a computed3d SD file
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Solid Phase Heat Capacity (Shomate Equation)
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Data compilation copyrightby 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. - 572. | 572. - 596. |
---|---|---|
A | 419.4837 | 86.02304 |
B | -1717.754 | 0.000000 |
C | 2953.573 | 0.000000 |
D | -1597.221 | 0.000000 |
E | -6.046884 | 0.000000 |
F | -517.8662 | -448.8512 |
G | 933.0738 | 169.6281 |
H | -425.9312 | -425.9312 |
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. | 59.52 | 64.43 | 64.44 | -0.00 |
300. | 59.67 | 64.83 | 64.45 | 0.12 |
400. | 64.94 | 82.71 | 66.85 | 6.34 |
500. | 75.16 | 98.17 | 71.59 | 13.29 |
Temperature (K) | Cp (J/mol*K) | S° (J/mol*K) | -(G° - H°298.15)/T (J/mol*K) | H° - H°298.15 (kJ/mol) |
---|---|---|---|---|
572. | 86.02 | 121.6 | 75.62 | 26.29 |
References
Go To:Top, Solid Phase Heat Capacity (Shomate Equation), Notes
Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved.
Specific Heat Capacity Formula
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, Solid Phase Heat Capacity (Shomate Equation), References
Specific Heat Capacity Of Sodium Hydroxide
- Data from NIST Standard Reference Database 69:NIST Chemistry WebBook
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