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  3. 3CH3COONH4 🔥→ NH4HCO3 + 3CO↑ + 2HCN + 7H2↑

3CH3COONH4 🔥→ NH4HCO3 + 3CO↑ + 2HCN + 7H2↑

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Decomposition of ammonium acetate
3CH3COONH4Ammonium acetate
🔥
⟶
NH4HCO3Ammonium hydrogencarbonate + 3CO↑Carbon monoxide + 2HCNHydrogen cyanide + 7H2↑Hydrogen

Decomposition of ammonium acetate yields ammonium hydrogencarbonate, carbon monoxide, hydrogen cyanide, 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

Decomposition of ammonium acetate
3CH3COONH4Ammonium acetate
🔥
⟶
NH4HCO3Ammonium hydrogencarbonate + 3CO↑Carbon monoxide + 2HCNHydrogen cyanide + 7H2↑Hydrogen

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 acetate3
Self redox agent
Thermally decomposable
Oxoacid salt

Products

Chemical formulaNameCoefficientTypeType in general
equation
NH4HCO3Ammonium hydrogencarbonate1
Oxidized
–
COCarbon monoxide3
Reduced
–
HCNHydrogen cyanide2
Oxidized
–
H2Hydrogen7
Reduced
–

Thermodynamic changes

Changes in standard condition

Decomposition of ammonium acetate
3CH3COONH4Crystalline solid
🔥
⟶
NH4HCO3Crystalline solid + 3CO↑Gas + 2HCNLiquid + 7H2↑Gas
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
885.2–––
per 1 mol of
295.1–––
885.2–––
per 1 mol of
295.1–––
per 1 mol of
442.6–––
per 1 mol of
126.5–––

Changes in aqueous solution (1)

Decomposition of ammonium acetate
◆
ΔrG507.7 kJ/mol
K0.11 × 10−88
pK88.95
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Gas + 2HCNUn-ionized aqueous solution + 7H2↑Gas
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
913.7507.71361.8–
per 1 mol of
304.6169.2453.93–
913.7507.71361.8–
per 1 mol of
304.6169.2453.93–
per 1 mol of
456.9253.8680.90–
per 1 mol of
130.572.53194.54–

Changes in aqueous solution (2)

Decomposition of ammonium acetate
◆
ΔrG630.9 kJ/mol
K0.30 × 10−110
pK110.53
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Gas + 2HCNUn-ionized aqueous solution + 7H2↑Un-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
884.3630.94486–
per 1 mol of
294.8210.31495–
884.3630.94486–
per 1 mol of
294.8210.31495–
per 1 mol of
442.1315.42243–
per 1 mol of
126.390.13640.9–

Changes in aqueous solution (3)

Decomposition of ammonium acetate
◆
ΔrG559.5 kJ/mol
K0.95 × 10−98
pK98.02
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNUn-ionized aqueous solution + 7H2↑Gas
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
882.4559.51082.6–
per 1 mol of
294.1186.5360.87–
882.4559.51082.6–
per 1 mol of
294.1186.5360.87–
per 1 mol of
441.2279.8541.30–
per 1 mol of
126.179.93154.66–

Changes in aqueous solution (4)

Decomposition of ammonium acetate
◆
ΔrG682.7 kJ/mol
K0.25 × 10−119
pK119.60
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNUn-ionized aqueous solution + 7H2↑Un-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
853.0682.74207–
per 1 mol of
284.3227.61402–
853.0682.74207–
per 1 mol of
284.3227.61402–
per 1 mol of
426.5341.42104–
per 1 mol of
121.997.53601.0–

Changes in aqueous solution (5)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Gas + 2HCNUn-ionized aqueous solution + 7H2↑Gas
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
916.5–––
per 1 mol of
305.5–––
916.5–––
per 1 mol of
305.5–––
per 1 mol of
458.3–––
per 1 mol of
130.9–––

Changes in aqueous solution (6)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Gas + 2HCNUn-ionized aqueous solution + 7H2↑Un-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
887.1–––
per 1 mol of
295.7–––
887.1–––
per 1 mol of
295.7–––
per 1 mol of
443.6–––
per 1 mol of
126.7–––

Changes in aqueous solution (7)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNUn-ionized aqueous solution + 7H2↑Gas
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
885.2–––
per 1 mol of
295.1–––
885.2–––
per 1 mol of
295.1–––
per 1 mol of
442.6–––
per 1 mol of
126.5–––

Changes in aqueous solution (8)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNUn-ionized aqueous solution + 7H2↑Un-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
855.8–––
per 1 mol of
285.3–––
855.8–––
per 1 mol of
285.3–––
per 1 mol of
427.9–––
per 1 mol of
122.3–––

Changes in aqueous solution (9)

Decomposition of ammonium acetate
◆
ΔrG613.1 kJ/mol
K0.39 × 10−107
pK107.41
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Gas + 2HCNIonized aqueous solution + 7H2↑Gas
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
1000.7613.11300.6–
per 1 mol of
333.57204.4433.53–
1000.7613.11300.6–
per 1 mol of
333.57204.4433.53–
per 1 mol of
500.35306.6650.30–
per 1 mol of
142.9687.59185.80–

Changes in aqueous solution (10)

Decomposition of ammonium acetate
◆
ΔrG736.3 kJ/mol
K0.10 × 10−128
pK128.99
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Gas + 2HCNIonized aqueous solution + 7H2↑Un-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
971.3736.34425–
per 1 mol of
323.8245.41475–
971.3736.34425–
per 1 mol of
323.8245.41475–
per 1 mol of
485.6368.12213–
per 1 mol of
138.8105.2632.1–

Changes in aqueous solution (11)

Decomposition of ammonium acetate
◆
ΔrG664.9 kJ/mol
K0.33 × 10−116
pK116.49
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNIonized aqueous solution + 7H2↑Gas
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
969.4664.91021.4–
per 1 mol of
323.1221.6340.47–
969.4664.91021.4–
per 1 mol of
323.1221.6340.47–
per 1 mol of
484.7332.4510.70–
per 1 mol of
138.594.99145.91–

Changes in aqueous solution (12)

Decomposition of ammonium acetate
◆
ΔrG788.1 kJ/mol
K0.85 × 10−138
pK138.07
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Ionized aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNIonized aqueous solution + 7H2↑Un-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
940.0788.14146–
per 1 mol of
313.3262.71382–
940.0788.14146–
per 1 mol of
313.3262.71382–
per 1 mol of
470.0394.12073–
per 1 mol of
134.3112.6592.3–

Changes in aqueous solution (13)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Gas + 2HCNIonized aqueous solution + 7H2↑Gas
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
1003.5–––
per 1 mol of
334.50–––
1003.5–––
per 1 mol of
334.50–––
per 1 mol of
501.75–––
per 1 mol of
143.36–––

Changes in aqueous solution (14)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Gas + 2HCNIonized aqueous solution + 7H2↑Un-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
974.1–––
per 1 mol of
324.7–––
974.1–––
per 1 mol of
324.7–––
per 1 mol of
487.1–––
per 1 mol of
139.2–––

Changes in aqueous solution (15)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNIonized aqueous solution + 7H2↑Gas
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
972.2–––
per 1 mol of
324.1–––
972.2–––
per 1 mol of
324.1–––
per 1 mol of
486.1–––
per 1 mol of
138.9–––

Changes in aqueous solution (16)

Decomposition of ammonium acetate
3CH3COONH4Ionized aqueous solution
🔥
⟶
NH4HCO3Aqueous solution + 3CO↑Un-ionized aqueous solution + 2HCNIonized aqueous solution + 7H2↑Un-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
942.8–––
per 1 mol of
314.3–––
942.8–––
per 1 mol of
314.3–––
per 1 mol of
471.4–––
per 1 mol of
134.7–––

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
NH4HCO3 (cr)-849.4[1]-665.9[1]120.9[1]–
NH4HCO3 (ai)-824.50[1]-666.07[1]204.6[1]–
NH4HCO3 (aq)-821.7[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]–
HCN (l)108.87[1]124.97[1]112.84[1]70.63[1]
HCN (g)135.1[1]124.7[1]201.78[1]35.86[1]
HCN (ai)150.6[1]172.4[1]94.1[1]–
HCN (ao)107.1[1]119.7[1]124.7[1]–
H2 (g)0[1]0[1]130.684[1]28.824[1]
H2 (ao)-4.2[1]17.6[1]577[1]–
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):Aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution, (l):Liquid

References

List of references

  1. 1
    Janiel J. Reed (1989)
    The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units
    National Institute of Standards and Technology (NIST)