7Na4[Fe(CN)6] + 4H2O 💧⚡→ 4Na3[Fe(CN)6] + 16NaCN + Fe3O4 + NH4CN + CH4↑
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- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as non-redox agent
Electrolysis of aqueous sodium hexacyanidoferrate(II) yields sodium hexacyanidoferrate(III), sodium cyanide, iron(II,III) oxide, ammonium cyanide, and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as non-redox agent
General equation
- Electrolysis of aqueous solution with water as non redox agent
- Miscible with water/Very soluble in water/Soluble in waterSelf redox agent + H2ONon-redox agent💧⚡⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as non-redox agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na4[Fe(CN)6] | Sodium hexacyanidoferrate(II) | 7 | Self redox agent | Soluble in water |
| H2O | Water | 4 | – | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na3[Fe(CN)6] | Sodium hexacyanidoferrate(III) | 4 | Oxidized | – |
| NaCN | Sodium cyanide | 16 | – | – |
| Fe3O4 | Iron(II,III) oxide | 1 | Oxidized | – |
| NH4CN | Ammonium cyanide | 1 | – | – |
| 1 | Reduced | – |
Thermodynamic changes
Changes in aqueous solution (1)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as non-redox agent◆
ΔrG 785.5 kJ/mol K 0.24 × 10−137 pK 137.61 - 7Na4[Fe(CN)6]Ionized aqueous solution + 4H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 16NaCNIonized aqueous solution + Fe3O4Crystalline solid + NH4CNIonized aqueous solution + ↑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 | 1436.7 | 785.5 | 2182.3 | – |
per 1 mol of | 205.24 | 112.2 | 311.76 | – |
per 1 mol of | 359.18 | 196.4 | 545.58 | – |
per 1 mol of | 359.18 | 196.4 | 545.58 | – |
per 1 mol of | 89.794 | 49.09 | 136.39 | – |
per 1 mol of | 1436.7 | 785.5 | 2182.3 | – |
per 1 mol of | 1436.7 | 785.5 | 2182.3 | – |
| 1436.7 | 785.5 | 2182.3 | – |
Changes in aqueous solution (2)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as non-redox agent◆
ΔrG 801.9 kJ/mol K 0.33 × 10−140 pK 140.49 - 7Na4[Fe(CN)6]Ionized aqueous solution + 4H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 16NaCNIonized aqueous solution + Fe3O4Crystalline solid + NH4CNIonized aqueous solution + ↑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 | 1422.5 | 801.9 | 2079.8 | – |
per 1 mol of | 203.21 | 114.6 | 297.11 | – |
per 1 mol of | 355.63 | 200.5 | 519.95 | – |
per 1 mol of | 355.63 | 200.5 | 519.95 | – |
per 1 mol of | 88.906 | 50.12 | 129.99 | – |
per 1 mol of | 1422.5 | 801.9 | 2079.8 | – |
per 1 mol of | 1422.5 | 801.9 | 2079.8 | – |
| 1422.5 | 801.9 | 2079.8 | – |
Changes in aqueous solution (3)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as non-redox agent
- 7Na4[Fe(CN)6]Ionized aqueous solution + 4H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 16NaCNIonized aqueous solution + Fe3O4Crystalline solid + NH4CNAqueous solution + ↑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 | 1450.9 | – | – | – |
per 1 mol of | 207.27 | – | – | – |
per 1 mol of | 362.73 | – | – | – |
per 1 mol of | 362.73 | – | – | – |
per 1 mol of | 90.681 | – | – | – |
per 1 mol of | 1450.9 | – | – | – |
per 1 mol of | 1450.9 | – | – | – |
| 1450.9 | – | – | – |
Changes in aqueous solution (4)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as non-redox agent
- 7Na4[Fe(CN)6]Ionized aqueous solution + 4H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 16NaCNIonized aqueous solution + Fe3O4Crystalline solid + NH4CNAqueous solution + ↑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 | 1436.7 | – | – | – |
per 1 mol of | 205.24 | – | – | – |
per 1 mol of | 359.18 | – | – | – |
per 1 mol of | 359.18 | – | – | – |
per 1 mol of | 89.794 | – | – | – |
per 1 mol of | 1436.7 | – | – | – |
per 1 mol of | 1436.7 | – | – | – |
| 1436.7 | – | – | – |
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 |
|---|---|---|---|---|
| Na4[Fe(CN)6] (ai) | -505.0[1] | -352.53[1] | 331.0[1] | – |
| H2O (cr) | – | – | – | – |
| H2O (l) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
| H2O (g) | -241.818[1] | -228.572[1] | 188.825[1] | 33.577[1] |
* (ai):Ionized aqueous solution, (cr):Crystalline solid, (l):Liquid, (g):Gas
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 |
|---|---|---|---|---|
| Na3[Fe(CN)6] (ai) | -158.6[1] | -56.4[1] | 447.3[1] | – |
| NaCN (cr) cubic | -87.49[1] | -76.43[1] | 115.60[1] | 70.37[1] |
| NaCN (cr) orthorhombic | -90.75[1] | – | – | – |
| NaCN (g) | 109[1] | 79.94[1] | 249.43[1] | 51.17[1] |
| NaCN (ai) | -89.5[1] | -89.5[1] | 153.1[1] | – |
| NaCN (cr) 1/2 hydrate | -235.77[1] | – | – | – |
| NaCN (cr) 2 hydrate | -679.77[1] | – | – | – |
| Fe3O4 (cr) | -1118.4[1] | -1015.4[1] | 146.4[1] | 143.43[1] |
| NH4CN (cr) | 0.42[1] | – | – | 134[1] |
| NH4CN (ai) | 18.0[1] | 93.0[1] | 207.5[1] | – |
| NH4CN (aq) | 32.2[1] | – | – | – |
| (g) | -74.81[1] | -50.72[1] | 186.264[1] | 35.309[1] |
| (ao) | -89.04[1] | -34.33[1] | 83.7[1] | – |
* (ai):Ionized aqueous solution, (cr):Crystalline solid, (g):Gas, (aq):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)
- ^ ΔfH°, -505.0 kJ · mol−1
- ^ ΔfG°, -352.53 kJ · mol−1
- ^ S°, 331.0 J · K−1 · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1
- ^ ΔfH°, -158.6 kJ · mol−1
- ^ ΔfG°, -56.4 kJ · mol−1
- ^ S°, 447.3 J · K−1 · mol−1
- ^ ΔfH°, -87.49 kJ · mol−1
- ^ ΔfG°, -76.43 kJ · mol−1
- ^ S°, 115.60 J · K−1 · mol−1
- ^ Cp°, 70.37 J · K−1 · mol−1
- ^ ΔfH°, -90.75 kJ · mol−1
- ^ ΔfH°, 109. kJ · mol−1
- ^ ΔfG°, 79.94 kJ · mol−1
- ^ S°, 249.43 J · K−1 · mol−1
- ^ Cp°, 51.17 J · K−1 · mol−1
- ^ ΔfH°, -89.5 kJ · mol−1
- ^ ΔfG°, -89.5 kJ · mol−1
- ^ S°, 153.1 J · K−1 · mol−1
- ^ ΔfH°, -235.77 kJ · mol−1
- ^ ΔfH°, -679.77 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°, 0.42 kJ · mol−1
- ^ Cp°, 134. J · K−1 · mol−1
- ^ ΔfH°, 18.0 kJ · mol−1
- ^ ΔfG°, 93.0 kJ · mol−1
- ^ S°, 207.5 J · K−1 · mol−1
- ^ ΔfH°, 32.2 kJ · mol−1
- ^ ΔfH°, -74.81 kJ · mol−1
- ^ ΔfG°, -50.72 kJ · mol−1
- ^ S°, 186.264 J · K−1 · mol−1
- ^ Cp°, 35.309 J · K−1 · mol−1
- ^ ΔfH°, -89.04 kJ · mol−1
- ^ ΔfG°, -34.33 kJ · mol−1
- ^ S°, 83.7 J · K−1 · mol−1