4FeSiO3 🔥⚡→ Fe3O4 + Fe + 4SiO2
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- Molten salt electrolysis of iron(II) metasilicate
Molten salt electrolysis of iron(II) metasilicate yields iron(II,III) oxide, , and silicon dioxide (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Molten salt electrolysis of iron(II) metasilicate
General equation
- Molten salt electrolysis
- SaltSelf redox agent🔥⚡⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Molten salt electrolysis of iron(II) metasilicate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| FeSiO3 | Iron(II) metasilicate | 4 | – | Salt |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Fe3O4 | Iron(II,III) oxide | 1 | Oxidized | – |
| 1 | Reduced | – | ||
| SiO2 | Silicon dioxide | 4 | – | – |
Thermodynamic changes
Changes in standard condition (1)
- Molten salt electrolysis of iron(II) metasilicate
| 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 | 58 | – | – | – |
per 1 mol of | 15 | – | – | – |
per 1 mol of | 58 | – | – | – |
| 58 | – | – | – | |
per 1 mol of | 15 | – | – | – |
Changes in standard condition (2)
- Molten salt electrolysis of iron(II) metasilicate
| 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 | 64 | – | – | – |
per 1 mol of | 16 | – | – | – |
per 1 mol of | 64 | – | – | – |
| 64 | – | – | – | |
per 1 mol of | 16 | – | – | – |
Changes in standard condition (3)
- Molten salt electrolysis of iron(II) metasilicate
| 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 | 65 | – | – | – |
per 1 mol of | 16 | – | – | – |
per 1 mol of | 65 | – | – | – |
| 65 | – | – | – | |
per 1 mol of | 16 | – | – | – |
Changes in standard condition (4)
- Molten salt electrolysis of iron(II) metasilicate
| 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 | 88 | – | – | – |
per 1 mol of | 22 | – | – | – |
per 1 mol of | 88 | – | – | – |
| 88 | – | – | – | |
per 1 mol of | 22 | – | – | – |
Changes in aqueous solution
- Molten salt electrolysis of iron(II) metasilicate
| 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 | 114 | – | – | – |
per 1 mol of | 28.5 | – | – | – |
per 1 mol of | 114 | – | – | – |
| 114 | – | – | – | |
per 1 mol of | 28.5 | – | – | – |
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 |
|---|---|---|---|---|
| FeSiO3 (cr) | -1205[1] | – | – | – |
* (cr):Crystalline solid
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 |
|---|---|---|---|---|
| Fe3O4 (cr) | -1118.4[1] | -1015.4[1] | 146.4[1] | 143.43[1] |
| (cr) | 0[1] | 0[1] | 27.28[1] | 25.10[1] |
| (g) | 416.3[1] | 370.7[1] | 180.490[1] | 25.677[1] |
| SiO2 (cr) α-quartz | -910.94[1] | -856.64[1] | 41.84[1] | 44.43[1] |
| SiO2 (cr) α-cristobalite | -909.48[1] | -855.43[1] | 42.68[1] | 44.18[1] |
| SiO2 (cr) α-tridymite | -909.06[1] | -855.26[1] | 43.5[1] | 44.60[1] |
| SiO2 (am) | -903.49[1] | -850.70[1] | 46.9[1] | 44.4[1] |
| SiO2 (g) | -322[1] | – | – | – |
| SiO2 (ao) | -897.0[1] | – | – | – |
* (cr):Crystalline solid, (g):Gas, (am):Amorphous solid, (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°, -1205. kJ · mol−1
- ^ ΔfH°, -1118.4 kJ · mol−1
- ^ ΔfG°, -1015.4 kJ · mol−1
- ^ S°, 146.4 J · K−1 · mol−1
- ^ Cp°, 143.43 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 27.28 J · K−1 · mol−1
- ^ Cp°, 25.10 J · K−1 · mol−1
- ^ ΔfH°, 416.3 kJ · mol−1
- ^ ΔfG°, 370.7 kJ · mol−1
- ^ S°, 180.490 J · K−1 · mol−1
- ^ Cp°, 25.677 J · K−1 · mol−1
- ^ ΔfH°, -910.94 kJ · mol−1
- ^ ΔfG°, -856.64 kJ · mol−1
- ^ S°, 41.84 J · K−1 · mol−1
- ^ Cp°, 44.43 J · K−1 · mol−1
- ^ ΔfH°, -909.48 kJ · mol−1
- ^ ΔfG°, -855.43 kJ · mol−1
- ^ S°, 42.68 J · K−1 · mol−1
- ^ Cp°, 44.18 J · K−1 · mol−1
- ^ ΔfH°, -909.06 kJ · mol−1
- ^ ΔfG°, -855.26 kJ · mol−1
- ^ S°, 43.5 J · K−1 · mol−1
- ^ Cp°, 44.60 J · K−1 · mol−1
- ^ ΔfH°, -903.49 kJ · mol−1
- ^ ΔfG°, -850.70 kJ · mol−1
- ^ S°, 46.9 J · K−1 · mol−1
- ^ Cp°, 44.4 J · K−1 · mol−1
- ^ ΔfH°, -322. kJ · mol−1
- ^ ΔfH°, -897.0 kJ · mol−1