BeF2 + 2H[AuCl4] → BeCl2 + 2AuCl3 + 2HF↑
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The reaction of beryllium fluoride and tetrachloridoauric(III) acid yields beryllium chloride, gold(III) chloride, and hydrogen fluoride. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of beryllium fluoride and tetrachloridoauric(III) acid
General equation
- Salt of weak acidBrønsted base + Strong acidBrønsted acid ⟶ Salt of strong acidConjugate base + Weak acidConjugate acid
Oxidation state of each atom
- Reaction of beryllium fluoride and tetrachloridoauric(III) acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| BeF2 | Beryllium fluoride | 1 | Brønsted base | Salt of weak acid |
| H[AuCl4] | Tetrachloridoauric(III) acid | 2 | Brønsted acid | Strong acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| BeCl2 | Beryllium chloride | 1 | Conjugate base | Salt of strong acid |
| AuCl3 | Gold(III) chloride | 2 | Conjugate base | Salt of strong acid |
| HF | Hydrogen fluoride | 2 | Conjugate acid | Weak acid |
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 |
|---|---|---|---|---|
| BeF2 (cr) α, quartz | -1026.8[1] | -979.4[1] | 53.35[1] | 51.84[1] |
| BeF2 (cr) β, cristobalite | -1023.8[1] | – | – | – |
| BeF2 (vit) | -1022.2[1] | – | – | – |
| BeF2 (g) | -793.7[1] | – | – | – |
| BeF2 (aq) | -1046.0[1] | – | – | – |
| H[AuCl4] | – | – | – | – |
* (cr):Crystalline solid, (vit):Vitreous liquid, (g):Gas, (aq):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 |
|---|---|---|---|---|
| BeCl2 (cr) α | -490.4[1] | -445.6[1] | 82.68[1] | 64.85[1] |
| BeCl2 (cr) β | -495.8[1] | -448.9[1] | 75.81[1] | 62.43[1] |
| BeCl2 (g) | -358.6[1] | – | – | – |
| BeCl2 (aq) | -715.9[1] | – | – | – |
| BeCl2 (cr) 4 hydrate | -1808.3[1] | – | – | – |
| AuCl3 (cr) | -117.6[1] | – | – | – |
| AuCl3 (cr) 2 hydrate | -715.0[1] | – | – | – |
| HF (l) x denotes undetermined zero point entropy | -299.78[1] | – | 75.40+x[1] | – |
| HF (g) | -271.1[1] | -273.2[1] | 173.779[1] | 29.133[1] |
| HF (ai) | -332.63[1] | -278.79[1] | -13.8[1] | -106.7[1] |
| HF (ao) | -320.08[1] | -296.82[1] | 88.7[1] | – |
* (cr):Crystalline solid, (g):Gas, (aq):Aqueous solution, (l):Liquid, (ai):Ionized aqueous solution, (ao):Un-ionized 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°, -1026.8 kJ · mol−1
- ^ ΔfG°, -979.4 kJ · mol−1
- ^ S°, 53.35 J · K−1 · mol−1
- ^ Cp°, 51.84 J · K−1 · mol−1
- ^ ΔfH°, -1023.8 kJ · mol−1
- ^ ΔfH°, -1022.2 kJ · mol−1
- ^ ΔfH°, -793.7 kJ · mol−1
- ^ ΔfH°, -1046.0 kJ · mol−1
- ^ ΔfH°, -490.4 kJ · mol−1
- ^ ΔfG°, -445.6 kJ · mol−1
- ^ S°, 82.68 J · K−1 · mol−1
- ^ Cp°, 64.85 J · K−1 · mol−1
- ^ ΔfH°, -495.8 kJ · mol−1
- ^ ΔfG°, -448.9 kJ · mol−1
- ^ S°, 75.81 J · K−1 · mol−1
- ^ Cp°, 62.43 J · K−1 · mol−1
- ^ ΔfH°, -358.6 kJ · mol−1
- ^ ΔfH°, -715.9 kJ · mol−1
- ^ ΔfH°, -1808.3 kJ · mol−1
- ^ ΔfH°, -117.6 kJ · mol−1
- ^ ΔfH°, -715.0 kJ · mol−1
- ^ ΔfH°, -299.78 kJ · mol−1
- ^ S°, 75.40+x J · K−1 · mol−1
- ^ ΔfH°, -271.1 kJ · mol−1
- ^ ΔfG°, -273.2 kJ · mol−1
- ^ S°, 173.779 J · K−1 · mol−1
- ^ Cp°, 29.133 J · K−1 · 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°, -320.08 kJ · mol−1
- ^ ΔfG°, -296.82 kJ · mol−1
- ^ S°, 88.7 J · K−1 · mol−1