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4CH3COOK ๐Ÿ”ฅโ†’ 2K2CO3 + CO2โ†‘ + 5C + 6H2โ†‘

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Decomposition of potassium acetate
4CH3COOKPotassium acetate
๐Ÿ”ฅ
โŸถ
2K2CO3Potassium carbonate + CO2โ†‘Carbon dioxide + 5CCarbon + 6H2โ†‘Hydrogen

Decomposition of potassium acetate yields potassium carbonate, carbon dioxide, 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

Decomposition of potassium acetate
4CH3COOKPotassium acetate
๐Ÿ”ฅ
โŸถ
2K2CO3Potassium carbonate + CO2โ†‘Carbon dioxide + 5CCarbon + 6H2โ†‘Hydrogen

General equation

Thermal decomposition with redox
Thermally decomposable substanceSelf redox agent
๐Ÿ”ฅ
โŸถ
ProductOxidation product + ProductReduction product
Thermal decomposition of oxoacid salt with redox
Oxoacid saltSelf redox agent
๐Ÿ”ฅ
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Decomposition of potassium acetate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CH3COOKPotassium acetate4
Self redox agent
Thermally decomposable
Oxoacid salt

Products

Chemical formulaNameCoefficientTypeType in general
equation
K2CO3Potassium carbonate2
Oxidized
โ€“
CO2Carbon dioxide1
Oxidized
โ€“
CCarbon5
Redoxed product
โ€“
H2Hydrogen6
Reduced
โ€“

Thermodynamic changes

Changes in standard condition (1)

Decomposition of potassium acetate
4CH3COOKCrystalline solid
๐Ÿ”ฅ
โŸถ
2K2CO3Crystalline solid + CO2โ†‘Gas + 5CCrystalline solidgraphite + 6H2โ†‘Gas
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
196.5โ€“โ€“โ€“
per 1 mol of
49.13โ€“โ€“โ€“
98.25โ€“โ€“โ€“
per 1 mol of
196.5โ€“โ€“โ€“
per 1 mol of
39.30โ€“โ€“โ€“
per 1 mol of
32.75โ€“โ€“โ€“

Changes in standard condition (2)

Decomposition of potassium acetate
4CH3COOKCrystalline solid
๐Ÿ”ฅ
โŸถ
2K2CO3Crystalline solid + CO2โ†‘Gas + 5CCrystalline soliddiamond + 6H2โ†‘Gas
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
205.9โ€“โ€“โ€“
per 1 mol of
51.48โ€“โ€“โ€“
103.0โ€“โ€“โ€“
per 1 mol of
205.9โ€“โ€“โ€“
per 1 mol of
41.18โ€“โ€“โ€“
per 1 mol of
34.32โ€“โ€“โ€“

Changes in aqueous solution (1)

Decomposition of potassium acetate
โ—†
ฮ”rG27.24 kJ/mol
K0.17 ร— 10โˆ’4
pK4.77
4CH3COOKIonized aqueous solution
๐Ÿ”ฅ
โŸถ
2K2CO3Ionized aqueous solution + CO2โ†‘Gas + 5CCrystalline solidgraphite + 6H2โ†‘Gas
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
196.2527.24566.3โ€“
per 1 mol of
49.0636.810141.6โ€“
98.12513.62283.1โ€“
per 1 mol of
196.2527.24566.3โ€“
per 1 mol of
39.2505.448113.3โ€“
per 1 mol of
32.7084.54094.38โ€“

Changes in aqueous solution (2)

Decomposition of potassium acetate
โ—†
ฮ”rG132.8 kJ/mol
K0.54 ร— 10โˆ’23
pK23.27
4CH3COOKIonized aqueous solution
๐Ÿ”ฅ
โŸถ
2K2CO3Ionized aqueous solution + CO2โ†‘Gas + 5CCrystalline solidgraphite + 6H2โ†‘Un-ionized aqueous solution
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
171.1132.83244โ€“
per 1 mol of
42.7733.20811.0โ€“
85.5566.401622โ€“
per 1 mol of
171.1132.83244โ€“
per 1 mol of
34.2226.56648.8โ€“
per 1 mol of
28.5222.13540.7โ€“

Changes in aqueous solution (3)

Decomposition of potassium acetate
โ—†
ฮ”rG35.62 kJ/mol
K0.57 ร— 10โˆ’6
pK6.24
4CH3COOKIonized aqueous solution
๐Ÿ”ฅ
โŸถ
2K2CO3Ionized aqueous solution + CO2โ†‘Un-ionized aqueous solution + 5CCrystalline solidgraphite + 6H2โ†‘Gas
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
175.9635.62470.2โ€“
per 1 mol of
43.9908.905117.5โ€“
87.98017.81235.1โ€“
per 1 mol of
175.9635.62470.2โ€“
per 1 mol of
35.1927.12494.04โ€“
per 1 mol of
29.3275.93778.37โ€“

Changes in aqueous solution (4)

Decomposition of potassium acetate
โ—†
ฮ”rG141.2 kJ/mol
K0.18 ร— 10โˆ’24
pK24.74
4CH3COOKIonized aqueous solution
๐Ÿ”ฅ
โŸถ
2K2CO3Ionized aqueous solution + CO2โ†‘Un-ionized aqueous solution + 5CCrystalline solidgraphite + 6H2โ†‘Un-ionized aqueous solution
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
150.8141.23148โ€“
per 1 mol of
37.7035.30787.0โ€“
75.4070.601574โ€“
per 1 mol of
150.8141.23148โ€“
per 1 mol of
30.1628.24629.6โ€“
per 1 mol of
25.1323.53524.7โ€“

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
CH3COOK (cr)-723.0[1]โ€“โ€“โ€“
CH3COOK (ai)-738.39[1]-652.58[1]189.1[1]15.5[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
K2CO3 (cr)-1151.02[1]-1063.5[1]155.52[1]114.43[1]
K2CO3 (ai)-1181.90[1]-1094.36[1]148.1[1]โ€“
K2CO3 (cr)
1.5 hydrate
-1609.2[1]-1432.5[1]203.3[1]โ€“
CO2 (g)-393.509[1]-394.359[1]213.74[1]37.11[1]
CO2 (ao)-413.80[1]-385.98[1]117.6[1]โ€“
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]โ€“
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution

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)