CH3COOK ๐ฅโ KOH + COโ + C + H2โ
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- Decomposition of potassium acetate
Decomposition of potassium acetate yields potassium hydroxide, carbon monoxide, , 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 potassium acetate
General equation
- Thermal decomposition with redox
- Thermally decomposable substanceSelf redox agent๐ฅโถ ProductOxidation product + ProductReduction product
- Thermal decomposition of oxoacid salt with redox
- Oxoacid saltSelf redox agent๐ฅโถ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Decomposition of potassium acetate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CH3COOK | Potassium acetate | 1 | Self redox agent | Thermally decomposable Oxoacid salt |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| KOH | Potassium hydroxide | 1 | โ | โ |
| CO | Carbon monoxide | 1 | Reduced | โ |
| 1 | Oxidized | โ | ||
| 1 | Reduced | โ |
Thermodynamic changes
Changes in standard condition (1)
- Decomposition of potassium acetate
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 187.7 | โ | โ | โ |
per 1 mol of | 187.7 | โ | โ | โ |
per 1 mol of | 187.7 | โ | โ | โ |
per 1 mol of | 187.7 | โ | โ | โ |
| 187.7 | โ | โ | โ | |
| 187.7 | โ | โ | โ |
Changes in standard condition (2)
- Decomposition of potassium acetate
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 189.6 | โ | โ | โ |
per 1 mol of | 189.6 | โ | โ | โ |
per 1 mol of | 189.6 | โ | โ | โ |
per 1 mol of | 189.6 | โ | โ | โ |
| 189.6 | โ | โ | โ | |
| 189.6 | โ | โ | โ |
Changes in aqueous solution (1)
- Decomposition of potassium acetateโ
ฮrG 74.91 kJ/mol K 0.75 ร 10โ13 pK 13.12
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 145.50 | 74.91 | 236.6 | โ75.8 |
per 1 mol of | 145.50 | 74.91 | 236.6 | โ75.8 |
per 1 mol of | 145.50 | 74.91 | 236.6 | โ75.8 |
per 1 mol of | 145.50 | 74.91 | 236.6 | โ75.8 |
| 145.50 | 74.91 | 236.6 | โ75.8 | |
| 145.50 | 74.91 | 236.6 | โ75.8 |
Changes in aqueous solution (2)
- Decomposition of potassium acetateโ
ฮrG 92.5 kJ/mol K 0.62 ร 10โ16 pK 16.21
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 141.3 | 92.5 | 683 | โ |
per 1 mol of | 141.3 | 92.5 | 683 | โ |
per 1 mol of | 141.3 | 92.5 | 683 | โ |
per 1 mol of | 141.3 | 92.5 | 683 | โ |
| 141.3 | 92.5 | 683 | โ | |
| 141.3 | 92.5 | 683 | โ |
Changes in aqueous solution (3)
- Decomposition of potassium acetateโ
ฮrG 92.18 kJ/mol K 0.71 ร 10โ16 pK 16.15
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 135.06 | 92.18 | 143.5 | โ |
per 1 mol of | 135.06 | 92.18 | 143.5 | โ |
per 1 mol of | 135.06 | 92.18 | 143.5 | โ |
per 1 mol of | 135.06 | 92.18 | 143.5 | โ |
| 135.06 | 92.18 | 143.5 | โ | |
| 135.06 | 92.18 | 143.5 | โ |
Changes in aqueous solution (4)
- Decomposition of potassium acetateโ
ฮrG 109.8 kJ/mol K 0.58 ร 10โ19 pK 19.24
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | 130.9 | 109.8 | 590 | โ |
per 1 mol of | 130.9 | 109.8 | 590 | โ |
per 1 mol of | 130.9 | 109.8 | 590 | โ |
per 1 mol of | 130.9 | 109.8 | 590 | โ |
| 130.9 | 109.8 | 590 | โ | |
| 130.9 | 109.8 | 590 | โ |
Thermodynamic data of reactants
| Chemical formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
|---|---|---|---|---|
| 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 formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
|---|---|---|---|---|
| KOH (cr) | -424.764[1] | -379.08[1] | 78.9[1] | 64.9[1] |
| KOH (g) | -231.0[1] | -232.6[1] | 238.3[1] | 49.20[1] |
| KOH (ai) | -482.37[1] | -440.50[1] | 91.6[1] | -126.8[1] |
| KOH (cr) 1 hydrate | -748.9[1] | -645.1[1] | 117.2[1] | โ |
| KOH (cr) 2 hydrate | -1051.0[1] | -887.3[1] | 150.6[1] | โ |
| 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] | โ |
| (cr) graphite | 0[1] | 0[1] | 5.740[1] | 8.527[1] |
| (cr) diamond | 1.895[1] | 2.900[1] | 2.377[1] | 6.113[1] |
| (g) | 716.682[1] | 671.257[1] | 158.096[1] | 20.838[1] |
| (g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
| (ao) | -4.2[1] | 17.6[1] | 577[1] | โ |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution
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)
- ^ ฮfHยฐ, -723.0 kJ ยท molโ1
- ^ ฮfHยฐ, -738.39 kJ ยท molโ1
- ^ ฮfGยฐ, -652.58 kJ ยท molโ1
- ^ Sยฐ, 189.1 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 15.5 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -424.764 kJ ยท molโ1
- ^ ฮfGยฐ, -379.08 kJ ยท molโ1
- ^ Sยฐ, 78.9 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 64.9 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -231.0 kJ ยท molโ1
- ^ ฮfGยฐ, -232.6 kJ ยท molโ1
- ^ Sยฐ, 238.3 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 49.20 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -482.37 kJ ยท molโ1
- ^ ฮfGยฐ, -440.50 kJ ยท molโ1
- ^ Sยฐ, 91.6 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, -126.8 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -748.9 kJ ยท molโ1
- ^ ฮfGยฐ, -645.1 kJ ยท molโ1
- ^ Sยฐ, 117.2 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1051.0 kJ ยท molโ1
- ^ ฮfGยฐ, -887.3 kJ ยท molโ1
- ^ Sยฐ, 150.6 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -110.525 kJ ยท molโ1
- ^ ฮfGยฐ, -137.168 kJ ยท molโ1
- ^ Sยฐ, 197.674 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 29.142 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -120.96 kJ ยท molโ1
- ^ ฮfGยฐ, -119.90 kJ ยท molโ1
- ^ Sยฐ, 104.6 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 5.740 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 8.527 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 1.895 kJ ยท molโ1
- ^ ฮfGยฐ, 2.900 kJ ยท molโ1
- ^ Sยฐ, 2.377 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 6.113 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 716.682 kJ ยท molโ1
- ^ ฮfGยฐ, 671.257 kJ ยท molโ1
- ^ Sยฐ, 158.096 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 20.838 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 130.684 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 28.824 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -4.2 kJ ยท molโ1
- ^ ฮfGยฐ, 17.6 kJ ยท molโ1
- ^ Sยฐ, 577 J ยท Kโ1 ยท molโ1