Cr4(OH)48+ + 8[Cr(OH)4]− → 12Cr(OH)3↓
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- Reaction of tetrachromium(III) tetrahydroxide ion and tetrahydroxidochromate(III) ion
- Cr4(OH)48+Tetrachromium(III) tetrahydroxide ion + 8[Cr(OH)4]−Tetrahydroxidochromate(III) ion12Cr(OH)3↓Chromium(III) hydroxide⟶
The reaction of tetrachromium(III) tetrahydroxide ion and tetrahydroxidochromate(III) ion yields chromium(III) hydroxide (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of tetrachromium(III) tetrahydroxide ion and tetrahydroxidochromate(III) ion
- Cr4(OH)48+Tetrachromium(III) tetrahydroxide ion + 8[Cr(OH)4]−Tetrahydroxidochromate(III) ion12Cr(OH)3↓Chromium(III) hydroxide⟶
General equation
- Reaction of cation and anion
- CationLewis acid + AnionLewis base ⟶ ProductLewis conjugate + (H2O)
- Precipitation reaction of cation and anion
- CationLewis acid + AnionLewis base ⟶ Insoluble in water/Very slightly soluble in water/Slightly soluble in waterLewis conjugate + (H2O)
Oxidation state of each atom
- Reaction of tetrachromium(III) tetrahydroxide ion and tetrahydroxidochromate(III) ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Cr4(OH)48+ | Tetrachromium(III) tetrahydroxide ion | 1 | Lewis acid | Cation |
| [Cr(OH)4]− | Tetrahydroxidochromate(III) ion | 8 | Lewis base | Anion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Cr(OH)3 | Chromium(III) hydroxide | 12 | Lewis conjugate | – Insoluble in water |
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 |
|---|---|---|---|---|
| Cr4(OH)48+ | – | – | – | – |
| [Cr(OH)4]− | – | – | – | – |
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(OH)3 (cr) precipitated | -1064.0[1] | – | – | – |
* (cr):Crystalline solid
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)