AgBr + 3Br− → [AgBr4]3−
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- Reaction of silver(I) bromide and bromide ion
The reaction of silver(I) bromide and bromide ion yields tetrabromidoargentate(I) 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 silver(I) bromide and bromide ion
General equation
- Reaction of neutral species and anion
- CompoundLewis acid + AnionLewis base ⟶ AnionLewis conjugate
Oxidation state of each atom
- Reaction of silver(I) bromide and bromide ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| AgBr | Silver(I) bromide | 1 | Lewis acid | Compound |
| Br− | Bromide ion | 3 | Lewis base | Anion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| [AgBr4]3− | Tetrabromidoargentate(I) ion | 1 | Lewis conjugate | Anion |
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 |
|---|---|---|---|---|
| AgBr (cr) | -100.37[1] | -96.90[1] | 107.1[1] | 52.38[1] |
| AgBr (ai) | -15.98[1] | -26.86[1] | 155.2[1] | -120.1[1] |
| AgBr (ao) | – | -51.0[1] | – | – |
| Br− (g) | -219.07[1] | – | – | – |
| Br− (ao) | -121.55[1] | -103.96[1] | 82.4[1] | -141.8[1] |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (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 |
|---|---|---|---|---|
| [AgBr4]3− | – | – | – | – |
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°, -100.37 kJ · mol−1
- ^ ΔfG°, -96.90 kJ · mol−1
- ^ S°, 107.1 J · K−1 · mol−1
- ^ Cp°, 52.38 J · K−1 · mol−1
- ^ ΔfH°, -15.98 kJ · mol−1
- ^ ΔfG°, -26.86 kJ · mol−1
- ^ S°, 155.2 J · K−1 · mol−1
- ^ Cp°, -120.1 J · K−1 · mol−1
- ^ ΔfG°, -51.0 kJ · mol−1
- ^ ΔfH°, -219.07 kJ · mol−1
- ^ ΔfH°, -121.55 kJ · mol−1
- ^ ΔfG°, -103.96 kJ · mol−1
- ^ S°, 82.4 J · K−1 · mol−1
- ^ Cp°, -141.8 J · K−1 · mol−1