Al3+ + 3[Al(SO4)2]− → 2Al2(SO4)3
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- Reaction of aluminium ion and bis(sulfatoaluminate ion
The reaction of aluminium ion and bis(sulfatoaluminate ion yields aluminium sulfate (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 bis(sulfatoaluminate 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 bis(sulfatoaluminate ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Al3+ | Aluminium ion | 1 | Lewis acid | Cation |
| [Al(SO4)2]− | Bis(sulfatoaluminate ion | 3 | Lewis base | Anion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Al2(SO4)3 | Aluminium sulfate | 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(SO4)2]− | – | – | – | – |
* (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(SO4)3 (cr) | -3440.84[1] | -3099.94[1] | 239.3[1] | 259.41[1] |
| Al2(SO4)3 (ai) | -3791[1] | -3205[1] | -583.2[1] | – |
| Al2(SO4)3 (aq) | -3774.8[1] | – | – | – |
| Al2(SO4)3 (cr) 6 hydrate | -5311.71[1] | -4622.08[1] | 469.0[1] | 492.9[1] |
| Al2(SO4)3 (cr) 18 hydrate | -8878.9[1] | – | – | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):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°, 5483.17 kJ · mol−1
- ^ ΔfH°, -531. kJ · mol−1
- ^ ΔfG°, -485. kJ · mol−1
- ^ S°, -321.7 J · K−1 · mol−1
- ^ ΔfH°, -3440.84 kJ · mol−1
- ^ ΔfG°, -3099.94 kJ · mol−1
- ^ S°, 239.3 J · K−1 · mol−1
- ^ Cp°, 259.41 J · K−1 · mol−1
- ^ ΔfH°, -3791. kJ · mol−1
- ^ ΔfG°, -3205. kJ · mol−1
- ^ S°, -583.2 J · K−1 · mol−1
- ^ ΔfH°, -3774.8 kJ · mol−1
- ^ ΔfH°, -5311.71 kJ · mol−1
- ^ ΔfG°, -4622.08 kJ · mol−1
- ^ S°, 469.0 J · K−1 · mol−1
- ^ Cp°, 492.9 J · K−1 · mol−1
- ^ ΔfH°, -8878.9 kJ · mol−1