3K2[Sn(OH)6] + 4e− → 3K2O + 2[Sn(OH)3]− + [Sn(OH)6]2− + 3H2O
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- Reduction of potassium hexahydroxidostannate(IV)
- 3K2[Sn(OH)6]Potassium hexahydroxidostannate(IV) + 4e−Electron3K2OPotassium oxide + 2[Sn(OH)3]−Trihydroxidostannate(II) ion + [Sn(OH)6]2−Hexahydroxidostannate(IV) ion + 3H2OWater⟶
Reduction of potassium hexahydroxidostannate(IV) yields potassium oxide, trihydroxidostannate(II) ion, hexahydroxidostannate(IV) ion, and water (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 potassium hexahydroxidostannate(IV)
- 3K2[Sn(OH)6]Potassium hexahydroxidostannate(IV) + 4e−Electron3K2OPotassium oxide + 2[Sn(OH)3]−Trihydroxidostannate(II) ion + [Sn(OH)6]2−Hexahydroxidostannate(IV) ion + 3H2OWater⟶
General equation
- Reduction of reducible species
- ReactantOxidizing agent + e− ⟶ ProductReduction product
Oxidation state of each atom
- Reduction of potassium hexahydroxidostannate(IV)
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| K2[Sn(OH)6] | Potassium hexahydroxidostannate(IV) | 3 | Oxidizing | – |
| e− | Electron | 4 | – | Electron |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| K2O | Potassium oxide | 3 | – | – |
| [Sn(OH)3]− | Trihydroxidostannate(II) ion | 2 | Reduced | – |
| [Sn(OH)6]2− | Hexahydroxidostannate(IV) ion | 1 | – | – |
| H2O | Water | 3 | – | – |
Thermodynamic changes
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 |
|---|---|---|---|---|
| K2[Sn(OH)6] | – | – | – | – |
| e− | – | – | – | – |
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 |
|---|---|---|---|---|
| K2O (cr) | -361.5[1] | -322.1[2] | 94.1[2] | 83.7[2] |
| K2O (g) | -63[1] | – | – | – |
| [Sn(OH)3]− | – | – | – | – |
| [Sn(OH)6]2− | – | – | – | – |
| 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] |
* (cr):Crystalline solid, (g):Gas, (l):Liquid
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)
- 2James G. Speight (2017)Lange's Handbook of Chemistry, 17th editionMcGraw Hill Education
- ^ ΔfG°, -322.1 kJ · mol−1 - p.280
- ^ S°, 94.1 J · K−1 · mol−1 - p.280
- ^ Cp°, 83.7 J · K−1 · mol−1 - p.280