12[Ag(S2O3)2]3− + 38e− → 6Ag2O + 26S2− + 11S2O62−
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- Reduction of bis(thiosulfato)argentate(I) ion
- 12[Ag(S2O3)2]3−Bis(thiosulfato)argentate(I) ion + 38e−Electron6Ag2OSilver(I) oxide + 26S2−Sulfide ion + 11S2O62−Dithionate ion⟶
Reduction of bis(thiosulfato)argentate(I) ion yields silver(I) oxide, sulfide ion, and dithionate 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 bis(thiosulfato)argentate(I) ion
- 12[Ag(S2O3)2]3−Bis(thiosulfato)argentate(I) ion + 38e−Electron6Ag2OSilver(I) oxide + 26S2−Sulfide ion + 11S2O62−Dithionate ion⟶
General equation
- Reduction of reducible species
- ReactantOxidizing agent + e− ⟶ ProductReduction product
Oxidation state of each atom
- Reduction of bis(thiosulfato)argentate(I) ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| [Ag(S2O3)2]3− | Bis(thiosulfato)argentate(I) ion | 12 | Oxidizing | – |
| e− | Electron | 38 | – | Electron |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ag2O | Silver(I) oxide | 6 | – | – |
| S2− | Sulfide ion | 26 | Reduced | – |
| S2O62− | Dithionate ion | 11 | – | – |
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 |
|---|---|---|---|---|
| [Ag(S2O3)2]3− | – | – | – | – |
| 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 |
|---|---|---|---|---|
| Ag2O (cr) | -31.05[1] | -11.20[1] | 121.3[1] | 65.86[1] |
| S2− (ao) | 33.1[1] | 85.8[1] | -14.6[1] | – |
| S2O62− (aq) | -1198.3[1] | – | – | – |
* (cr):Crystalline solid, (ao):Un-ionized aqueous solution, (aq):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)