Al3+ + 2F− + 2OH− → [AlF2(OH)2]−
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- Reaction of aluminium ion and fluoride ion under basic condition
- Al3+Aluminium ion + 2F−Fluoride ion + 2OH−Hydroxide ion[AlF2(OH)2]−Difluoridodihydroxidoaluminate ion⟶
The reaction of aluminium ion, fluoride ion, and hydroxide ion yields difluoridodihydroxidoaluminate 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 fluoride ion under basic condition
- Al3+Aluminium ion + 2F−Fluoride ion + 2OH−Hydroxide ion[AlF2(OH)2]−Difluoridodihydroxidoaluminate ion⟶
General equation
- Reaction of cation and anion under basic condition
- CationLewis acid + AnionLewis base + OH−Lewis base ⟶ ProductLewis conjugate
Oxidation state of each atom
- Reaction of aluminium ion and fluoride ion under basic condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Al3+ | Aluminium ion | 1 | Lewis acid | Cation |
| F− | Fluoride ion | 2 | Lewis base | Anion |
| OH− | Hydroxide ion | 2 | Lewis base | Hydroxide ion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| [AlF2(OH)2]− | Difluoridodihydroxidoaluminate ion | 1 | 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] | – |
| F− (g) | -255.39[1] | – | – | – |
| F− (ao) | -332.63[1] | -278.79[1] | -13.8[1] | -106.7[1] |
| OH− (g) | -143.5[1] | – | – | – |
| OH− (ao) | -229.994[1] | -157.244[1] | -10.75[1] | -148.5[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 |
|---|---|---|---|---|
| [AlF2(OH)2]− | – | – | – | – |
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°, 5483.17 kJ · mol−1
- ^ ΔfH°, -531. kJ · mol−1
- ^ ΔfG°, -485. kJ · mol−1
- ^ S°, -321.7 J · K−1 · mol−1
- ^ ΔfH°, -255.39 kJ · mol−1
- ^ ΔfH°, -332.63 kJ · mol−1
- ^ ΔfG°, -278.79 kJ · mol−1
- ^ S°, -13.8 J · K−1 · mol−1
- ^ Cp°, -106.7 J · K−1 · mol−1
- ^ ΔfH°, -143.5 kJ · mol−1
- ^ ΔfH°, -229.994 kJ · mol−1
- ^ ΔfG°, -157.244 kJ · mol−1
- ^ S°, -10.75 J · K−1 · mol−1
- ^ Cp°, -148.5 J · K−1 · mol−1