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2CH3COONH4 🔥→ N2O4 + 4C + 7H2

Decomposition of ammonium acetate yields dinitrogen tetraoxide, carbon, and hydrogen (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:

Table of contents
  1. 1Reaction data
  2. 2Thermodynamic changes
  3. 3References
  4. 4Related reactions
  5. 5Related categories

Reaction data

Chemical equation

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 formulaNameCoefficientTypeType in general
equation
CH3COONH4Ammonium acetate2
Self redox agent
Thermally decomposable
Oxoacid salt

Products

Chemical formulaNameCoefficientTypeType in general
equation
N2O4Dinitrogen tetraoxide1
Oxidized
CCarbon4
Redoxed product
H2Hydrogen7
Reduced

Thermodynamic changes

Changes in standard condition (1)

Decomposition of ammonium acetate
2CH3COONH4Crystalline solid
🔥
N2O4Liquid + 4CCrystalline solidgraphite + 7H2Gas
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
1212.78
per 1 mol of
606.390
1212.78
per 1 mol of
303.195
per 1 mol of
173.254

Changes in standard condition (2)

Decomposition of ammonium acetate
2CH3COONH4Crystalline solid
🔥
N2O4Liquid + 4CCrystalline soliddiamond + 7H2Gas
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
1220.36
per 1 mol of
610.180
1220.36
per 1 mol of
305.090
per 1 mol of
174.337

Changes in aqueous solution (1)

Decomposition of ammonium acetate
ΔrG994.76 kJ/mol
K0.53 × 10−174
pK174.27
2CH3COONH4Ionized aqueous solution
🔥
N2O4Liquid + 4CCrystalline solidgraphite + 7H2Gas
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
1217.54994.76746.9231.4
per 1 mol of
608.770497.38373.4115.7
1217.54994.76746.9231.4
per 1 mol of
304.385248.69186.757.85
per 1 mol of
173.934142.11106.733.06

Changes in aqueous solution (2)

Decomposition of ammonium acetate
ΔrG1118.0 kJ/mol
K0.14 × 10−195
pK195.87
2CH3COONH4Ionized aqueous solution
🔥
N2O4Liquid + 4CCrystalline solidgraphite + 7H2Un-ionized aqueous solution
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
1188.11118.03871
per 1 mol of
594.05559.001936
1188.11118.03871
per 1 mol of
297.02279.50967.8
per 1 mol of
169.73159.71553.0

Thermodynamic data of reactants

Chemical formulaStandard 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 formulaStandard 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
N2O4 (l)-19.50[1]97.54[1]209.2[1]142.7[1]
N2O4 (g)9.16[1]97.89[1]304.29[1]77.28[1]
C (cr)
graphite
0[1]0[1]5.740[1]8.527[1]
C (cr)
diamond
1.895[1]2.900[1]2.377[1]6.113[1]
C (g)716.682[1]671.257[1]158.096[1]20.838[1]
H2 (g)0[1]0[1]130.684[1]28.824[1]
H2 (ao)-4.2[1]17.6[1]577[1]
* (l):Liquid, (g):Gas, (cr):Crystalline solid, (ao):Un-ionized aqueous solution

References

List of references

  1. 1