Boric acid
- Formula: BH3O3
- Molecular weight: 61.833
- IUPAC Standard InChI: InChI=1S/BH3O3/c2-1(3)4/h2-4H
- IUPAC Standard InChIKey: KGBXLFKZBHKPEV-UHFFFAOYSA-N
- CAS Registry Number: 10043-35-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Orthoboric acid; H3-BO3; Boracic acid; Boric acid (BH3O3); Boric acid (H3BO3); Borofax; Boron hydroxide; Boron trihydroxide; NCI-C56417; Orthoboric acid (B(OH)3); Borsaure; Three elephant; Ant flip; Homberg's salt; B(OH)3; Basilit B; Dr.'s 1 Flea Terminator DF; Dr.'s 1 Flea Terminator DFPBO; Dr.'s 1 Flea Terminator DT; Dr.'s 1 Flea Terminator DTPBO; Flea Prufe; NSC 81726; Super Flea Eliminator; Trihydroxyborane; Acidum boricum (Salt/Mix); Bluboro (Salt/Mix); Collyrium Eye Wash (Salt/Mix); Collyrium Fresh-Eye Drops (Salt/Mix); component of Aci-Jel (Salt/Mix)
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Solid 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 1500. |
|---|---|
| A | 40.82396 |
| B | 195.2296 |
| C | -86.64855 |
| D | 13.60210 |
| E | -0.919735 |
| F | -1117.203 |
| G | 78.45126 |
| H | -1093.990 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1964 |
| 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. | 81.31 | 88.66 | 88.76 | -0.03 |
| 300. | 81.74 | 89.20 | 88.76 | 0.13 |
| 400. | 100.2 | 115.4 | 92.19 | 9.27 |
| 500. | 114.8 | 139.3 | 99.26 | 20.04 |
| 600. | 127.2 | 161.4 | 107.8 | 32.16 |
| 700. | 137.8 | 181.8 | 116.9 | 45.42 |
| 800. | 147.1 | 200.8 | 126.2 | 59.67 |
| 900. | 155.1 | 218.6 | 135.5 | 74.79 |
| 1000. | 162.1 | 235.4 | 144.7 | 90.66 |
| 1100. | 168.1 | 251.1 | 153.7 | 107.2 |
| 1200. | 173.2 | 265.9 | 162.4 | 124.2 |
| 1300. | 177.5 | 280.0 | 170.9 | 141.8 |
| 1400. | 181.2 | 293.3 | 179.2 | 159.7 |
| 1500. | 184.2 | 305.9 | 187.2 | 178.0 |
References
Go To: Top, Solid 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, Solid Phase Heat Capacity (Shomate Equation), References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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