2CH3COONH4 🔥→ 2NO↑ + CO↑ + H2O + 3CH4↑
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- Decomposition of ammonium acetate
Decomposition of ammonium acetate yields nitrogen monoxide, carbon monoxide, water, and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Decomposition of ammonium acetate
General equation
- Thermal decomposition with redox
- Thermally decomposable substanceSelf redox agent🔥⟶ ProductOxidation product + ProductReduction product
- Thermal decomposition of oxoacid salt with redox
- Oxoacid saltSelf redox agent🔥⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Decomposition of ammonium acetate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CH3COONH4 | Ammonium acetate | 2 | Self redox agent | Thermally decomposable Oxoacid salt |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NO | Nitrogen monoxide | 2 | Oxidized | – |
| CO | Carbon monoxide | 1 | Reduced | – |
| H2O | Water | 1 | – | – |
| 3 | Reduced | – |
Thermodynamic changes
Changes in standard condition
- Decomposition of ammonium acetate
| Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
|---|---|---|---|---|
per 1 mol of Equation | 792.00 | – | – | – |
per 1 mol of | 396.00 | – | – | – |
per 1 mol of | 396.00 | – | – | – |
per 1 mol of | 792.00 | – | – | – |
per 1 mol of | 792.00 | – | – | – |
| 264.00 | – | – | – |
Changes in aqueous solution (1)
- Decomposition of ammonium acetate◆
ΔrG 543.86 kJ/mol K 0.52 × 10−95 pK 95.28
| Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
|---|---|---|---|---|
per 1 mol of Equation | 796.76 | 543.86 | 847.9 | 122.8 |
per 1 mol of | 398.38 | 271.93 | 423.9 | 61.40 |
per 1 mol of | 398.38 | 271.93 | 423.9 | 61.40 |
per 1 mol of | 796.76 | 543.86 | 847.9 | 122.8 |
per 1 mol of | 796.76 | 543.86 | 847.9 | 122.8 |
| 265.59 | 181.29 | 282.6 | 40.93 |
Changes in aqueous solution (2)
- Decomposition of ammonium acetate◆
ΔrG 593.03 kJ/mol K 0.13 × 10−103 pK 103.89
| Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
|---|---|---|---|---|
per 1 mol of Equation | 754.07 | 593.03 | 540.2 | – |
per 1 mol of | 377.04 | 296.51 | 270.1 | – |
per 1 mol of | 377.04 | 296.51 | 270.1 | – |
per 1 mol of | 754.07 | 593.03 | 540.2 | – |
per 1 mol of | 754.07 | 593.03 | 540.2 | – |
| 251.36 | 197.68 | 180.1 | – |
Changes in aqueous solution (3)
- Decomposition of ammonium acetate◆
ΔrG 561.13 kJ/mol K 0.49 × 10−98 pK 98.31
| Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
|---|---|---|---|---|
per 1 mol of Equation | 786.32 | 561.13 | 754.8 | – |
per 1 mol of | 393.16 | 280.56 | 377.4 | – |
per 1 mol of | 393.16 | 280.56 | 377.4 | – |
per 1 mol of | 786.32 | 561.13 | 754.8 | – |
per 1 mol of | 786.32 | 561.13 | 754.8 | – |
| 262.11 | 187.04 | 251.6 | – |
Changes in aqueous solution (4)
- Decomposition of ammonium acetate◆
ΔrG 610.30 kJ/mol K 0.12 × 10−106 pK 106.92
| Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
|---|---|---|---|---|
per 1 mol of Equation | 743.63 | 610.30 | 447.1 | – |
per 1 mol of | 371.81 | 305.15 | 223.6 | – |
per 1 mol of | 371.81 | 305.15 | 223.6 | – |
per 1 mol of | 743.63 | 610.30 | 447.1 | – |
per 1 mol of | 743.63 | 610.30 | 447.1 | – |
| 247.88 | 203.43 | 149.0 | – |
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 |
|---|---|---|---|---|
| CH3COONH4 (cr) | -616.14[1] | – | – | – |
| CH3COONH4 (ai) | -618.52[1] | -448.61[1] | 200.0[1] | 73.6[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 |
|---|---|---|---|---|
| NO (g) | 90.25[1] | 86.55[1] | 210.761[1] | 29.844[1] |
| CO (g) | -110.525[1] | -137.168[1] | 197.674[1] | 29.142[1] |
| CO (ao) | -120.96[1] | -119.90[1] | 104.6[1] | – |
| H2O (cr) | – | – | – | – |
| H2O (l) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
| H2O (g) | -241.818[1] | -228.572[1] | 188.825[1] | 33.577[1] |
| (g) | -74.81[1] | -50.72[1] | 186.264[1] | 35.309[1] |
| (ao) | -89.04[1] | -34.33[1] | 83.7[1] | – |
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (l):Liquid
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°, -616.14 kJ · mol−1
- ^ ΔfH°, -618.52 kJ · mol−1
- ^ ΔfG°, -448.61 kJ · mol−1
- ^ S°, 200.0 J · K−1 · mol−1
- ^ Cp°, 73.6 J · K−1 · mol−1
- ^ ΔfH°, 90.25 kJ · mol−1
- ^ ΔfG°, 86.55 kJ · mol−1
- ^ S°, 210.761 J · K−1 · mol−1
- ^ Cp°, 29.844 J · K−1 · mol−1
- ^ ΔfH°, -110.525 kJ · mol−1
- ^ ΔfG°, -137.168 kJ · mol−1
- ^ S°, 197.674 J · K−1 · mol−1
- ^ Cp°, 29.142 J · K−1 · mol−1
- ^ ΔfH°, -120.96 kJ · mol−1
- ^ ΔfG°, -119.90 kJ · mol−1
- ^ S°, 104.6 J · K−1 · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1
- ^ ΔfH°, -74.81 kJ · mol−1
- ^ ΔfG°, -50.72 kJ · mol−1
- ^ S°, 186.264 J · K−1 · mol−1
- ^ Cp°, 35.309 J · K−1 · mol−1
- ^ ΔfH°, -89.04 kJ · mol−1
- ^ ΔfG°, -34.33 kJ · mol−1
- ^ S°, 83.7 J · K−1 · mol−1