[Ag(S2O3)2]3− + 4e− → Ag+ + 2SO32− + 2S2−
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- Reduction of bis(thiosulfato)argentate(I) ion
- [Ag(S2O3)2]3−Bis(thiosulfato)argentate(I) ion + 4e−ElectronAg+Silver(I) ion + 2SO32−Sulfurous ion + 2S2−Sulfide ion⟶
Reduction of bis(thiosulfato)argentate(I) ion yields silver(I) ion, sulfurous ion, and sulfide 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
- [Ag(S2O3)2]3−Bis(thiosulfato)argentate(I) ion + 4e−ElectronAg+Silver(I) ion + 2SO32−Sulfurous ion + 2S2−Sulfide 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 | 1 | Oxidizing | – |
| e− | Electron | 4 | – | Electron |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ag+ | Silver(I) ion | 1 | – | – |
| SO32− | Sulfurous ion | 2 | Reduced | – |
| S2− | Sulfide ion | 2 | Reduced | – |
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 |
|---|---|---|---|---|
| Ag+ (g) | 1021.73[1] | – | – | – |
| Ag+ (ao) | 105.579[1] | 77.107[1] | 72.68[1] | 21.8[1] |
| SO32− (ao) | -635.5[1] | -486.5[1] | -29[1] | – |
| S2− (ao) | 33.1[1] | 85.8[1] | -14.6[1] | – |
* (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)