Co + H2S2O3 → CoS + H2SO3
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- Reaction of and thiosulfuric acid
The reaction of and thiosulfuric acid yields cobalt(II) sulfide and sulfurous acid (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of and thiosulfuric acid
General equation
- Reaction of reducing species and reducible species
- Reducing speciesReducing agent + Reducible speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of and thiosulfuric acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| 1 | Reducing | Reducing | ||
| H2S2O3 | Thiosulfuric acid | 1 | Oxidizing | Reducible |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CoS | Cobalt(II) sulfide | 1 | Redoxed product | – |
| H2SO3 | Sulfurous acid | 1 | 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 |
|---|---|---|---|---|
| (cr) α, hexagonal | 0[1] | 0[1] | 30.04[1] | 24.81[1] |
| (cr) β, face centered cubic | 0.46[1] | 0.25[1] | 30.71[1] | – |
| (g) | 424.7[1] | 380.3[1] | 179.515[1] | 23.020[1] |
| H2S2O3 | – | – | – | – |
* (cr):Crystalline solid, (g):Gas
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 |
|---|---|---|---|---|
| CoS (cr) | -82.8[1] | – | – | – |
| H2SO3 (ao) | -608.81[1] | -537.81[1] | 232.2[1] | – |
* (cr):Crystalline solid, (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)
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 30.04 J · K−1 · mol−1
- ^ Cp°, 24.81 J · K−1 · mol−1
- ^ ΔfH°, 0.46 kJ · mol−1
- ^ ΔfG°, 0.25 kJ · mol−1
- ^ S°, 30.71 J · K−1 · mol−1
- ^ ΔfH°, 424.7 kJ · mol−1
- ^ ΔfG°, 380.3 kJ · mol−1
- ^ S°, 179.515 J · K−1 · mol−1
- ^ Cp°, 23.020 J · K−1 · mol−1
- ^ ΔfH°, -82.8 kJ · mol−1
- ^ ΔfH°, -608.81 kJ · mol−1
- ^ ΔfG°, -537.81 kJ · mol−1
- ^ S°, 232.2 J · K−1 · mol−1