[Fe(CN)6]3− + e− → [Fe(CN)6]4−
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- Reduction of hexacyanidoferrate(III) ion
- [Fe(CN)6]3−Hexacyanidoferrate(III) ion + e−Electron[Fe(CN)6]4−Hexacyanidoferrate(II) ion⟶
Reduction of hexacyanidoferrate(III) ion yields hexacyanidoferrate(II) ion (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reduction of hexacyanidoferrate(III) ion
- [Fe(CN)6]3−Hexacyanidoferrate(III) ion + e−Electron[Fe(CN)6]4−Hexacyanidoferrate(II) ion⟶
General equation
- Reduction of reducible species
- ReactantOxidizing agent + e− ⟶ ProductReduction product
Oxidation state of each atom
- Reduction of hexacyanidoferrate(III) ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| [Fe(CN)6]3− | Hexacyanidoferrate(III) ion | 1 | Oxidizing | – |
| e− | Electron | 1 | – | Electron |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| [Fe(CN)6]4− | Hexacyanidoferrate(II) ion | 1 | Reduced | – |
Thermodynamic changes
Changes in standard condition
- Reduction of hexacyanidoferrate(III) ion◆
ΔrG −34.3 kJ/mol K 1.02 × 106 pK −6.01 - [Fe(CN)6]3−Un-ionized aqueous solution + e−[Fe(CN)6]4−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 | −106.3 | −34.3 | −175.3 | – |
per 1 mol of Hexacyanidoferrate(III) ion | −106.3 | −34.3 | −175.3 | – |
per 1 mol of Electron | −106.3 | −34.3 | −175.3 | – |
per 1 mol of Hexacyanidoferrate(II) ion | −106.3 | −34.3 | −175.3 | – |
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 |
|---|---|---|---|---|
| [Fe(CN)6]3− (ao) | 561.9[1] | 729.4[1] | 270.3[1] | – |
| e− | – | – | – | – |
* (ao):Un-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 |
|---|---|---|---|---|
| [Fe(CN)6]4− (ao) | 455.6[1] | 695.08[1] | 95.0[1] | – |
* (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)