2CdSO4 + H2O 💧⚡→ 2Cd + H2S2O3 + 3O2↑
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- Electrolysis of aqueous cadmium sulfate with water as non-redox agent
Electrolysis of aqueous cadmium sulfate yields , thiosulfuric acid, and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolysis of aqueous cadmium sulfate with water as non-redox agent
General equation
- Electrolysis of aqueous solution with water as non redox agent
- Miscible with water/Very soluble in water/Soluble in waterSelf redox agent + H2ONon-redox agent💧⚡⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous cadmium sulfate with water as non-redox agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CdSO4 | Cadmium sulfate | 2 | Self redox agent | Very soluble in water |
| H2O | Water | 1 | – | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| 2 | Reduced | – | ||
| H2S2O3 | Thiosulfuric acid | 1 | Reduced | – |
| 3 | Oxidized | – |
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 |
|---|---|---|---|---|
| CdSO4 (cr) | -933.28[1] | -822.72[1] | 123.039[1] | 99.58[1] |
| CdSO4 (ai) | -985.16[1] | -822.13[1] | -53.1[1] | – |
| CdSO4 (cr) 1 hydrate | -1239.55[1] | -1068.73[1] | 154.030[1] | 134.56[1] |
| CdSO4 (cr) 8/3 hydrate | -1729.4[1] | -1465.141[1] | 229.630[1] | 213.26[1] |
| 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, (ai):Ionized aqueous solution, (l):Liquid, (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 |
|---|---|---|---|---|
| (cr) γ | 0[1] | 0[1] | 51.76[1] | 25.98[1] |
| (cr) α | -0.59[1] | -0.59[1] | 51.76[1] | – |
| (g) | 112.01[1] | 77.41[1] | 167.746[1] | 20.786[1] |
| H2S2O3 | – | – | – | – |
| (g) | 0[1] | 0[1] | 205.138[1] | 29.355[1] |
| (ao) | -11.7[1] | 16.4[1] | 110.9[1] | – |
* (cr):Crystalline solid, (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)
- ^ ΔfH°, -933.28 kJ · mol−1
- ^ ΔfG°, -822.72 kJ · mol−1
- ^ S°, 123.039 J · K−1 · mol−1
- ^ Cp°, 99.58 J · K−1 · mol−1
- ^ ΔfH°, -985.16 kJ · mol−1
- ^ ΔfG°, -822.13 kJ · mol−1
- ^ S°, -53.1 J · K−1 · mol−1
- ^ ΔfH°, -1239.55 kJ · mol−1
- ^ ΔfG°, -1068.73 kJ · mol−1
- ^ S°, 154.030 J · K−1 · mol−1
- ^ Cp°, 134.56 J · K−1 · mol−1
- ^ ΔfH°, -1729.4 kJ · mol−1
- ^ ΔfG°, -1465.141 kJ · mol−1
- ^ S°, 229.630 J · K−1 · mol−1
- ^ Cp°, 213.26 J · K−1 · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 51.76 J · K−1 · mol−1
- ^ Cp°, 25.98 J · K−1 · mol−1
- ^ ΔfH°, -0.59 kJ · mol−1
- ^ ΔfG°, -0.59 kJ · mol−1
- ^ S°, 51.76 J · K−1 · mol−1
- ^ ΔfH°, 112.01 kJ · mol−1
- ^ ΔfG°, 77.41 kJ · mol−1
- ^ S°, 167.746 J · K−1 · mol−1
- ^ Cp°, 20.786 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 205.138 J · K−1 · mol−1
- ^ Cp°, 29.355 J · K−1 · mol−1
- ^ ΔfH°, -11.7 kJ · mol−1
- ^ ΔfG°, 16.4 kJ · mol−1
- ^ S°, 110.9 J · K−1 · mol−1