FeSiO3 + 2H[AuCl4] → FeCl2 + 2AuCl3 + H2SiO3
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The reaction of iron(II) metasilicate and tetrachloridoauric(III) acid yields iron(II) chloride, gold(III) chloride, and metasilicic acid (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 iron(II) metasilicate 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 iron(II) metasilicate and tetrachloridoauric(III) acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| FeSiO3 | Iron(II) metasilicate | 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 |
|---|---|---|---|---|
| FeCl2 | Iron(II) chloride | 1 | Conjugate base | Salt of strong acid |
| AuCl3 | Gold(III) chloride | 2 | Conjugate base | Salt of strong acid |
| H2SiO3 | Metasilicic acid | 1 | 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 |
|---|---|---|---|---|
| FeSiO3 (cr) | -1205[1] | – | – | – |
| H[AuCl4] | – | – | – | – |
* (cr):Crystalline solid
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 |
|---|---|---|---|---|
| FeCl2 (cr) | -341.79[1] | -302.30[1] | 117.95[1] | 76.65[1] |
| FeCl2 (g) | -148.5[1] | – | – | – |
| FeCl2 (ai) | -423.4[1] | -341.34[1] | -24.7[1] | – |
| FeCl2 (ao) | – | -279.1[1] | – | – |
| FeCl2 (cr) 2 hydrate | -953.1[1] | – | – | – |
| FeCl2 (cr) 4 hydrate | -1549.3[1] | – | – | – |
| AuCl3 (cr) | -117.6[1] | – | – | – |
| AuCl3 (cr) 2 hydrate | -715.0[1] | – | – | – |
| H2SiO3 (cr) | -1188.7[1] | -1092.4[1] | 134[1] | – |
| H2SiO3 (ao) | -1182.8[1] | -1079.4[1] | 109[1] | – |
* (cr):Crystalline solid, (g):Gas, (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°, -1205. kJ · mol−1
- ^ ΔfH°, -341.79 kJ · mol−1
- ^ ΔfG°, -302.30 kJ · mol−1
- ^ S°, 117.95 J · K−1 · mol−1
- ^ Cp°, 76.65 J · K−1 · mol−1
- ^ ΔfH°, -148.5 kJ · mol−1
- ^ ΔfH°, -423.4 kJ · mol−1
- ^ ΔfG°, -341.34 kJ · mol−1
- ^ S°, -24.7 J · K−1 · mol−1
- ^ ΔfG°, -279.1 kJ · mol−1
- ^ ΔfH°, -953.1 kJ · mol−1
- ^ ΔfH°, -1549.3 kJ · mol−1
- ^ ΔfH°, -117.6 kJ · mol−1
- ^ ΔfH°, -715.0 kJ · mol−1
- ^ ΔfH°, -1188.7 kJ · mol−1
- ^ ΔfG°, -1092.4 kJ · mol−1
- ^ S°, 134. J · K−1 · mol−1
- ^ ΔfH°, -1182.8 kJ · mol−1
- ^ ΔfG°, -1079.4 kJ · mol−1
- ^ S°, 109. J · K−1 · mol−1