3SrCO3 🔥→ 3SrO + 3C + 2O3↑
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- Decomposition of strontium carbonate
Decomposition of strontium carbonate yields strontium oxide, , 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 strontium carbonate
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 strontium carbonate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SrCO3 | Strontium carbonate | 3 | Self redox agent | Thermally decomposable Oxoacid salt |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SrO | Strontium oxide | 3 | – | – |
| 3 | Reduced | – | ||
| 2 | Oxidized | – |
Thermodynamic changes
Changes in standard condition (1)
- Decomposition of strontium carbonate◆
ΔrG 2061.0 kJ/mol K 0.85 × 10−361 pK 361.07
| 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 | 2169.7 | 2061.0 | 367.0 | −5.22 |
per 1 mol of | 723.23 | 687.00 | 122.3 | −1.74 |
per 1 mol of | 723.23 | 687.00 | 122.3 | −1.74 |
| 723.23 | 687.00 | 122.3 | −1.74 | |
| 1084.8 | 1030.5 | 183.5 | −2.61 |
Changes in standard condition (2)
- Decomposition of strontium carbonate◆
ΔrG 2069.7 kJ/mol K 0.25 × 10−362 pK 362.60
| 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 | 2175.4 | 2069.7 | 356.9 | −12.46 |
per 1 mol of | 725.13 | 689.90 | 119.0 | −4.153 |
per 1 mol of | 725.13 | 689.90 | 119.0 | −4.153 |
| 725.13 | 689.90 | 119.0 | −4.153 | |
| 1087.7 | 1034.8 | 178.4 | −6.230 |
Changes in aqueous solution (1)
- Decomposition of strontium carbonate◆
ΔrG 2061.0 kJ/mol K 0.85 × 10−361 pK 361.07
| 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 | 2169.7 | 2061.0 | 367.0 | −5.22 |
per 1 mol of | 723.23 | 687.00 | 122.3 | −1.74 |
per 1 mol of | 723.23 | 687.00 | 122.3 | −1.74 |
| 723.23 | 687.00 | 122.3 | −1.74 | |
| 1084.8 | 1030.5 | 183.5 | −2.61 |
Changes in aqueous solution (2)
- Decomposition of strontium carbonate◆
ΔrG 2082.8 kJ/mol K 0.13 × 10−364 pK 364.89
| 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 | 2136.1 | 2082.8 | 181 | – |
per 1 mol of | 712.03 | 694.27 | 60.3 | – |
per 1 mol of | 712.03 | 694.27 | 60.3 | – |
| 712.03 | 694.27 | 60.3 | – | |
| 1068.0 | 1041.4 | 90.5 | – |
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 |
|---|---|---|---|---|
| SrCO3 (cr) | -1220.1[1] | -1140.1[1] | 97.1[1] | 81.42[1] |
| SrCO3 (ai) | -1222.94[1] | -1087.29[1] | -89.5[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 |
|---|---|---|---|---|
| SrO (cr) | -592.0[1] | -561.9[1] | 54.4[1] | 45.02[1] |
| SrO (g) | -8[1] | – | – | – |
| (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) | 142.7[1] | 163.2[1] | 238.93[1] | 39.20[1] |
| (ao) | 125.9[1] | 174.1[1] | 146[1] | – |
* (cr):Crystalline solid, (g):Gas, (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)
- ^ ΔfH°, -1220.1 kJ · mol−1
- ^ ΔfG°, -1140.1 kJ · mol−1
- ^ S°, 97.1 J · K−1 · mol−1
- ^ Cp°, 81.42 J · K−1 · mol−1
- ^ ΔfH°, -1222.94 kJ · mol−1
- ^ ΔfG°, -1087.29 kJ · mol−1
- ^ S°, -89.5 J · K−1 · mol−1
- ^ ΔfH°, -592.0 kJ · mol−1
- ^ ΔfG°, -561.9 kJ · mol−1
- ^ S°, 54.4 J · K−1 · mol−1
- ^ Cp°, 45.02 J · K−1 · mol−1
- ^ ΔfH°, -8. kJ · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 5.740 J · K−1 · mol−1
- ^ Cp°, 8.527 J · K−1 · mol−1
- ^ ΔfH°, 1.895 kJ · mol−1
- ^ ΔfG°, 2.900 kJ · mol−1
- ^ S°, 2.377 J · K−1 · mol−1
- ^ Cp°, 6.113 J · K−1 · mol−1
- ^ ΔfH°, 716.682 kJ · mol−1
- ^ ΔfG°, 671.257 kJ · mol−1
- ^ S°, 158.096 J · K−1 · mol−1
- ^ Cp°, 20.838 J · K−1 · mol−1
- ^ ΔfH°, 142.7 kJ · mol−1
- ^ ΔfG°, 163.2 kJ · mol−1
- ^ S°, 238.93 J · K−1 · mol−1
- ^ Cp°, 39.20 J · K−1 · mol−1
- ^ ΔfH°, 125.9 kJ · mol−1
- ^ ΔfG°, 174.1 kJ · mol−1
- ^ S°, 146. J · K−1 · mol−1