2Rb2SO4 + 2e− → 4Rb+ + S2O62− + 2O2−
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- Reduction of rubidium sulfate
Reduction of rubidium sulfate yields rubidium ion, dithionate ion, and oxide 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 rubidium sulfate
General equation
- Reduction of reducible species
- ReactantOxidizing agent + e− ⟶ ProductReduction product
Oxidation state of each atom
- Reduction of rubidium sulfate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Rb2SO4 | Rubidium sulfate | 2 | Oxidizing | – |
| e− | Electron | 2 | – | Electron |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Rb+ | Rubidium ion | 4 | – | – |
| S2O62− | Dithionate ion | 1 | Reduced | – |
| O2− | Oxide ion | 2 | – | – |
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 |
|---|---|---|---|---|
| Rb2SO4 (cr) | -1435.61[1] | -1316.89[1] | 197.44[1] | 134.06[1] |
| Rb2SO4 (g) | -1068.6[1] | – | – | – |
| Rb2SO4 (ai) | -1411.60[1] | -1312.50[1] | 263.2[1] | – |
| e− | – | – | – | – |
* (cr):Crystalline solid, (g):Gas, (ai):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 |
|---|---|---|---|---|
| Rb+ (g) | 490.101[1] | – | – | – |
| Rb+ (ao) | -251.17[1] | -283.98[1] | 121.50[1] | – |
| S2O62− (aq) | -1198.3[1] | – | – | – |
| O2− | – | – | – | – |
* (g):Gas, (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)
- ^ ΔfH°, -1435.61 kJ · mol−1
- ^ ΔfG°, -1316.89 kJ · mol−1
- ^ S°, 197.44 J · K−1 · mol−1
- ^ Cp°, 134.06 J · K−1 · mol−1
- ^ ΔfH°, -1068.6 kJ · mol−1
- ^ ΔfH°, -1411.60 kJ · mol−1
- ^ ΔfG°, -1312.50 kJ · mol−1
- ^ S°, 263.2 J · K−1 · mol−1
- ^ ΔfH°, 490.101 kJ · mol−1
- ^ ΔfH°, -251.17 kJ · mol−1
- ^ ΔfG°, -283.98 kJ · mol−1
- ^ S°, 121.50 J · K−1 · mol−1
- ^ ΔfH°, -1198.3 kJ · mol−1