3Al3+ + [Al(OH)4]− → 2Al2(OH)24+
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- Reaction of aluminium ion and tetrahydroxidoaluminate ion
- 3Al3+Aluminium ion + [Al(OH)4]−Tetrahydroxidoaluminate ion2Al2(OH)24+Dialuminium dihydroxide ion⟶
The reaction of aluminium ion and tetrahydroxidoaluminate ion yields dialuminium dihydroxide ion (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 aluminium ion and tetrahydroxidoaluminate ion
- 3Al3+Aluminium ion + [Al(OH)4]−Tetrahydroxidoaluminate ion2Al2(OH)24+Dialuminium dihydroxide ion⟶
General equation
- Reaction of cation and anion
- CationLewis acid + AnionLewis base ⟶ ProductLewis conjugate + (H2O)
Oxidation state of each atom
- Reaction of aluminium ion and tetrahydroxidoaluminate ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Al3+ | Aluminium ion | 3 | Lewis acid | Cation |
| [Al(OH)4]− | Tetrahydroxidoaluminate ion | 1 | Lewis base | Anion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Al2(OH)24+ | Dialuminium dihydroxide ion | 2 | Lewis conjugate | – |
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 |
|---|---|---|---|---|
| Al3+ (g) | 5483.17[1] | – | – | – |
| Al3+ (ao) | -531[1] | -485[1] | -321.7[1] | – |
| [Al(OH)4]− (ao) | -1502.5[1] | -1305.3[1] | 102.9[1] | – |
* (g):Gas, (ao):Un-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 |
|---|---|---|---|---|
| Al2(OH)24+ | – | – | – | – |
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)