ammonium iodide
- Formula: H4IN
- Molecular weight: 144.9429
- IUPAC Standard InChI: InChI=1S/HI.H3N/h1H;1H3
- IUPAC Standard InChIKey: UKFWSNCTAHXBQN-UHFFFAOYSA-N
- CAS Registry Number: 12027-06-4
- Chemical structure:
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Condensed phase thermochemistry data
Go To: Top, Phase change data, References, Notes
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°solid | -202.09 | kJ/mol | Review | Chase, 1998 | Data last reviewed in March, 1962 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 113.00 | J/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1962 |
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 (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 2000. |
|---|---|
| A | 76.35256 |
| B | 9.301953 |
| C | 81.70975 |
| D | -34.25776 |
| E | -0.326712 |
| F | -227.0067 |
| G | 197.4543 |
| H | -202.0872 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1962 |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 182. | kJ/mol | N/A | Luft, 1955 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, 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]
Luft, 1955
Luft, N.W.,
Ind. Chemist, 1955, 31, 502. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
S°solid Entropy of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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