9NH4NO3 → N2H5+ + 10NO2+ + 7OH− + 6NH4+ + 10e−
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- Oxidation of ammonium nitrate
- 9NH4NO3Ammonium nitrateN2H5+Hydrazinium ion + 10NO2+Nitronium ion + 7OH−Hydroxide ion + 6NH4+Ammonium ion + 10e−Electron⟶
Oxidation of ammonium nitrate yields hydrazinium ion, nitronium ion, hydroxide ion, ammonium ion. This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Oxidation of ammonium nitrate
- 9NH4NO3Ammonium nitrateN2H5+Hydrazinium ion + 10NO2+Nitronium ion + 7OH−Hydroxide ion + 6NH4+Ammonium ion + 10e−Electron⟶
General equation
- Oxidation of oxidizable species
- ReactantReducing agent ⟶ ProductOxidation product + e−
Oxidation state of each atom
- Oxidation of ammonium nitrate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NH4NO3 | Ammonium nitrate | 9 | Reducing | – |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| N2H5+ | Hydrazinium ion | 1 | Oxidized | – |
| NO2+ | Nitronium ion | 10 | Oxidized | – |
| OH− | Hydroxide ion | 7 | – | – |
| NH4+ | Ammonium ion | 6 | – | – |
| e− | Electron | 10 | – | Electron |
Thermodynamic changes
Thermodynamic data of reactants
| Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
|---|---|---|---|---|
| NH4NO3 (cr) | -365.56[1] | -183.87[1] | 151.08[1] | 139.3[1] |
| NH4NO3 (ai) | -339.87[1] | -190.56[1] | 259.8[1] | -6.7[1] |
* (cr):Crystalline solid, (ai):Ionized aqueous solution
Thermodynamic data of products
| Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
|---|---|---|---|---|
| N2H5+ (ao) | -7.5[1] | 82.5[1] | 151[1] | 70.3[1] |
| NO2+ (g) | 967.8[1] | – | – | – |
| OH− (g) | -143.5[1] | – | – | – |
| OH− (ao) | -229.994[1] | -157.244[1] | -10.75[1] | -148.5[1] |
| NH4+ (ao) | -132.51[1] | -79.31[1] | 113.4[1] | 79.9[1] |
| e− | – | – | – | – |
* (ao):Un-ionized aqueous solution, (g):Gas
References
List of references
- 1Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- ^ ΔfH°, -365.56 kJ · mol−1
- ^ ΔfG°, -183.87 kJ · mol−1
- ^ S°, 151.08 J · K−1 · mol−1
- ^ Cp°, 139.3 J · K−1 · mol−1
- ^ ΔfH°, -339.87 kJ · mol−1
- ^ ΔfG°, -190.56 kJ · mol−1
- ^ S°, 259.8 J · K−1 · mol−1
- ^ Cp°, -6.7 J · K−1 · mol−1
- ^ ΔfH°, -7.5 kJ · mol−1
- ^ ΔfG°, 82.5 kJ · mol−1
- ^ S°, 151. J · K−1 · mol−1
- ^ Cp°, 70.3 J · K−1 · mol−1
- ^ ΔfH°, 967.8 kJ · mol−1
- ^ ΔfH°, -143.5 kJ · mol−1
- ^ ΔfH°, -229.994 kJ · mol−1
- ^ ΔfG°, -157.244 kJ · mol−1
- ^ S°, -10.75 J · K−1 · mol−1
- ^ Cp°, -148.5 J · K−1 · mol−1
- ^ ΔfH°, -132.51 kJ · mol−1
- ^ ΔfG°, -79.31 kJ · mol−1
- ^ S°, 113.4 J · K−1 · mol−1
- ^ Cp°, 79.9 J · K−1 · mol−1