6Na4[Fe(CN)6] + 39H2O 💧⚡→ 4Na3[Fe(CN)6] + 12NaNO2 + Fe2O3 + 12CO↑ + 39H2↑
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- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as oxidizing agent
Electrolysis of aqueous sodium hexacyanidoferrate(II) yields sodium hexacyanidoferrate(III), sodium nitrite, iron(III) oxide, 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
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as oxidizing agent
General equation
- Electrolysis of aqueous solution with water as oxidizing agent
- Miscible with water/Very soluble in water/Soluble in waterReducing agent + H2OOxidizing agent💧⚡⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as oxidizing agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na4[Fe(CN)6] | Sodium hexacyanidoferrate(II) | 6 | Reducing | Soluble in water |
| H2O | Water | 39 | Oxidizing | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na3[Fe(CN)6] | Sodium hexacyanidoferrate(III) | 4 | Oxidized | – |
| NaNO2 | Sodium nitrite | 12 | Oxidized | – |
| Fe2O3 | Iron(III) oxide | 1 | Oxidized | – |
| CO | Carbon monoxide | 12 | – | – |
| 39 | Reduced | – |
Thermodynamic changes
Changes in aqueous solution (1)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as oxidizing agent◆
ΔrG 5220.2 kJ/mol K 0.29 × 10−914 pK 914.54 - 6Na4[Fe(CN)6]Ionized aqueous solution + 39H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 12NaNO2Ionized aqueous solution + Fe2O3Crystalline solid + 12CO↑Gas + 39↑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 | 7254.9 | 5220.2 | 6816.9 | – |
per 1 mol of | 1209.1 | 870.03 | 1136.1 | – |
per 1 mol of | 186.02 | 133.85 | 174.79 | – |
per 1 mol of | 1813.7 | 1305.0 | 1704.2 | – |
per 1 mol of | 604.57 | 435.02 | 568.07 | – |
per 1 mol of | 7254.9 | 5220.2 | 6816.9 | – |
per 1 mol of | 604.57 | 435.02 | 568.07 | – |
| 186.02 | 133.85 | 174.79 | – |
Changes in aqueous solution (2)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as oxidizing agent◆
ΔrG 5906.6 kJ/mol K 0.16 × 10−1034 pK 1034.79 - 6Na4[Fe(CN)6]Ionized aqueous solution + 39H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 12NaNO2Ionized aqueous solution + Fe2O3Crystalline solid + 12CO↑Gas + 39↑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 | 7091.1 | 5906.6 | 24223 | – |
per 1 mol of | 1181.9 | 984.43 | 4037.2 | – |
per 1 mol of | 181.82 | 151.45 | 621.10 | – |
per 1 mol of | 1772.8 | 1476.7 | 6055.8 | – |
per 1 mol of | 590.93 | 492.22 | 2018.6 | – |
per 1 mol of | 7091.1 | 5906.6 | 24223 | – |
per 1 mol of | 590.93 | 492.22 | 2018.6 | – |
| 181.82 | 151.45 | 621.10 | – |
Changes in aqueous solution (3)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as oxidizing agent◆
ΔrG 5427.4 kJ/mol K 0.14 × 10−950 pK 950.84 - 6Na4[Fe(CN)6]Ionized aqueous solution + 39H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 12NaNO2Ionized aqueous solution + Fe2O3Crystalline solid + 12CO↑Un-ionized aqueous solution + 39↑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 | 7129.7 | 5427.4 | 5700.0 | – |
per 1 mol of | 1188.3 | 904.57 | 950.00 | – |
per 1 mol of | 182.81 | 139.16 | 146.15 | – |
per 1 mol of | 1782.4 | 1356.8 | 1425.0 | – |
per 1 mol of | 594.14 | 452.28 | 475.00 | – |
per 1 mol of | 7129.7 | 5427.4 | 5700.0 | – |
per 1 mol of | 594.14 | 452.28 | 475.00 | – |
| 182.81 | 139.16 | 146.15 | – |
Changes in aqueous solution (4)
- Electrolysis of aqueous sodium hexacyanidoferrate(II) with water as oxidizing agent◆
ΔrG 6113.8 kJ/mol K 0.81 × 10−1071 pK 1071.09 - 6Na4[Fe(CN)6]Ionized aqueous solution + 39H2OLiquid4Na3[Fe(CN)6]Ionized aqueous solution + 12NaNO2Ionized aqueous solution + Fe2O3Crystalline solid + 12CO↑Un-ionized aqueous solution + 39↑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 | 6965.9 | 6113.8 | 23106 | – |
per 1 mol of | 1161.0 | 1019.0 | 3851.0 | – |
per 1 mol of | 178.61 | 156.76 | 592.46 | – |
per 1 mol of | 1741.5 | 1528.5 | 5776.5 | – |
per 1 mol of | 580.49 | 509.48 | 1925.5 | – |
per 1 mol of | 6965.9 | 6113.8 | 23106 | – |
per 1 mol of | 580.49 | 509.48 | 1925.5 | – |
| 178.61 | 156.76 | 592.46 | – |
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] | – |
| NaNO2 (cr) | -358.65[1] | -284.55[1] | 103.8[1] | – |
| NaNO2 (ai) | -344.8[1] | -294.1[1] | 182.0[1] | -51.0[1] |
| Fe2O3 (cr) | -824.2[1] | -742.2[1] | 87.40[1] | 103.85[1] |
| 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] | – |
| (g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
| (ao) | -4.2[1] | 17.6[1] | 577[1] | – |
* (ai):Ionized aqueous solution, (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°, -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°, -358.65 kJ · mol−1
- ^ ΔfG°, -284.55 kJ · mol−1
- ^ S°, 103.8 J · K−1 · mol−1
- ^ ΔfH°, -344.8 kJ · mol−1
- ^ ΔfG°, -294.1 kJ · mol−1
- ^ S°, 182.0 J · K−1 · mol−1
- ^ Cp°, -51.0 J · K−1 · mol−1
- ^ ΔfH°, -824.2 kJ · mol−1
- ^ ΔfG°, -742.2 kJ · mol−1
- ^ S°, 87.40 J · K−1 · mol−1
- ^ Cp°, 103.85 J · K−1 · mol−1
- ^ ΔfH°, -110.525 kJ · mol−1
- ^ ΔfG°, -137.168 kJ · mol−1
- ^ S°, 197.674 J · K−1 · mol−1
- ^ Cp°, 29.142 J · K−1 · mol−1
- ^ ΔfH°, -120.96 kJ · mol−1
- ^ ΔfG°, -119.90 kJ · mol−1
- ^ S°, 104.6 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 130.684 J · K−1 · mol−1
- ^ Cp°, 28.824 J · K−1 · mol−1
- ^ ΔfH°, -4.2 kJ · mol−1
- ^ ΔfG°, 17.6 kJ · mol−1
- ^ S°, 577 J · K−1 · mol−1