5FeSiO3 + KMnO4 + 18H+ → 5Fe3+ + Mn2+ + 5SiO2 + 9H2O + K+
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- Reaction of iron(II) metasilicate and potassium permanganate under acidic condition
- 5FeSiO3Iron(II) metasilicate + KMnO4Potassium permanganate + 18H+Hydrogen ion5Fe3+Iron(III) ion + Mn2+Manganese(II) ion + 5SiO2Silicon dioxide + 9H2OWater + K+Potassium ion⟶
The reaction of iron(II) metasilicate, potassium permanganate, and hydrogen ion yields iron(III) ion, manganese(II) ion, silicon dioxide, water, and potassium ion (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of iron(II) metasilicate and potassium permanganate under acidic condition
- 5FeSiO3Iron(II) metasilicate + KMnO4Potassium permanganate + 18H+Hydrogen ion5Fe3+Iron(III) ion + Mn2+Manganese(II) ion + 5SiO2Silicon dioxide + 9H2OWater + K+Potassium ion⟶
General equation
- Reaction of oxidizable species and oxidizing species under acidic condition
- Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H+Non-redox agent ⟶ ProductOxidation product + ProductReduction product + H2ONon-redox product
Oxidation state of each atom
- Reaction of iron(II) metasilicate and potassium permanganate under acidic condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| FeSiO3 | Iron(II) metasilicate | 5 | Reducing | Oxidizable |
| KMnO4 | Potassium permanganate | 1 | Oxidizing | Oxidizing under acidic condition |
| H+ | Hydrogen ion | 18 | – | Hydrogen ion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Fe3+ | Iron(III) ion | 5 | Oxidized | – |
| Mn2+ | Manganese(II) ion | 1 | Reduced | – |
| SiO2 | Silicon dioxide | 5 | – | – |
| H2O | Water | 9 | – | Water |
| K+ | Potassium ion | 1 | – | – |
Thermodynamic changes
Changes in standard condition
- Reaction of iron(II) metasilicate and potassium permanganate under acidic condition
| Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
|---|---|---|---|---|
per 1 mol of Equation | −954 | – | – | – |
per 1 mol of | −191 | – | – | – |
per 1 mol of | −954 | – | – | – |
per 1 mol of Hydrogen ion | −53.0 | – | – | – |
per 1 mol of Iron(III) ion | −191 | – | – | – |
per 1 mol of Manganese(II) ion | −954 | – | – | – |
per 1 mol of | −191 | – | – | – |
per 1 mol of | −106 | – | – | – |
per 1 mol of Potassium ion | −954 | – | – | – |
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] | – | – | – |
| KMnO4 (cr) | -837.2[1] | -737.6[1] | 171.71[1] | 117.57[1] |
| KMnO4 (ai) | -793.8[1] | -730.5[1] | 293.7[1] | -60.2[1] |
| H+ (g) | 1536.202[1] | – | – | – |
| H+ (ao) | 0[1] | 0[1] | 0[1] | 0[1] |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (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 |
|---|---|---|---|---|
| Fe3+ (g) | 5712.8[1] | – | – | – |
| Fe3+ (ao) | -48.5[1] | -4.7[1] | -315.9[1] | – |
| Mn2+ (g) | 2519.69[1] | – | – | – |
| Mn2+ (ao) | -220.75[1] | -228.1[1] | -73.6[1] | 50[1] |
| SiO2 (cr) α-quartz | -910.94[1] | -856.64[1] | 41.84[1] | 44.43[1] |
| SiO2 (cr) α-cristobalite | -909.48[1] | -855.43[1] | 42.68[1] | 44.18[1] |
| SiO2 (cr) α-tridymite | -909.06[1] | -855.26[1] | 43.5[1] | 44.60[1] |
| SiO2 (am) | -903.49[1] | -850.70[1] | 46.9[1] | 44.4[1] |
| SiO2 (g) | -322[1] | – | – | – |
| SiO2 (ao) | -897.0[1] | – | – | – |
| H2O (cr) | – | – | – | – |
| H2O (l) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
| H2O (g) | -241.818[1] | -228.572[1] | 188.825[1] | 33.577[1] |
| K+ (g) | 514.26[1] | – | – | – |
| K+ (ao) | -252.38[1] | -283.27[1] | 102.5[1] | 21.8[1] |
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (am):Amorphous solid, (l):Liquid
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°, -837.2 kJ · mol−1
- ^ ΔfG°, -737.6 kJ · mol−1
- ^ S°, 171.71 J · K−1 · mol−1
- ^ Cp°, 117.57 J · K−1 · mol−1
- ^ ΔfH°, -793.8 kJ · mol−1
- ^ ΔfG°, -730.5 kJ · mol−1
- ^ S°, 293.7 J · K−1 · mol−1
- ^ Cp°, -60.2 J · K−1 · mol−1
- ^ ΔfH°, 1536.202 kJ · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 0 J · K−1 · mol−1
- ^ Cp°, 0 J · K−1 · mol−1
- ^ ΔfH°, 5712.8 kJ · mol−1
- ^ ΔfH°, -48.5 kJ · mol−1
- ^ ΔfG°, -4.7 kJ · mol−1
- ^ S°, -315.9 J · K−1 · mol−1
- ^ ΔfH°, 2519.69 kJ · mol−1
- ^ ΔfH°, -220.75 kJ · mol−1
- ^ ΔfG°, -228.1 kJ · mol−1
- ^ S°, -73.6 J · K−1 · mol−1
- ^ Cp°, 50. J · K−1 · mol−1
- ^ ΔfH°, -910.94 kJ · mol−1
- ^ ΔfG°, -856.64 kJ · mol−1
- ^ S°, 41.84 J · K−1 · mol−1
- ^ Cp°, 44.43 J · K−1 · mol−1
- ^ ΔfH°, -909.48 kJ · mol−1
- ^ ΔfG°, -855.43 kJ · mol−1
- ^ S°, 42.68 J · K−1 · mol−1
- ^ Cp°, 44.18 J · K−1 · mol−1
- ^ ΔfH°, -909.06 kJ · mol−1
- ^ ΔfG°, -855.26 kJ · mol−1
- ^ S°, 43.5 J · K−1 · mol−1
- ^ Cp°, 44.60 J · K−1 · mol−1
- ^ ΔfH°, -903.49 kJ · mol−1
- ^ ΔfG°, -850.70 kJ · mol−1
- ^ S°, 46.9 J · K−1 · mol−1
- ^ Cp°, 44.4 J · K−1 · mol−1
- ^ ΔfH°, -322. kJ · mol−1
- ^ ΔfH°, -897.0 kJ · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1
- ^ ΔfH°, 514.26 kJ · mol−1
- ^ ΔfH°, -252.38 kJ · mol−1
- ^ ΔfG°, -283.27 kJ · mol−1
- ^ S°, 102.5 J · K−1 · mol−1
- ^ Cp°, 21.8 J · K−1 · mol−1