5BaI2 + 2KMnO4 + 5H2O → 5Ba(OH)2 + 4I2 + Mn2O3 + 2KI
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- Reaction of barium iodide and potassium permanganate under neutral condition
The reaction of barium iodide, potassium permanganate, and water yields barium hydroxide, , manganese(III) oxide, and potassium iodide (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 barium iodide and potassium permanganate under neutral condition
General equation
- Reaction of oxidizable species and oxidizing species under neutral condition
- Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H2ONon-redox agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of barium iodide and potassium permanganate under neutral condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| BaI2 | Barium iodide | 5 | Reducing | Oxidizable |
| KMnO4 | Potassium permanganate | 2 | Oxidizing | Oxidizing |
| H2O | Water | 5 | – | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ba(OH)2 | Barium hydroxide | 5 | – | – |
| 4 | Oxidized | – | ||
| Mn2O3 | Manganese(III) oxide | 1 | Reduced | – |
| KI | Potassium iodide | 2 | – | – |
Thermodynamic changes
Changes in standard condition
- Reaction of barium iodide and potassium permanganate under neutral 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 | −224.3 | – | – | – |
per 1 mol of | −44.86 | – | – | – |
per 1 mol of | −112.2 | – | – | – |
per 1 mol of | −44.86 | – | – | – |
per 1 mol of | −44.86 | – | – | – |
| −56.08 | – | – | – | |
per 1 mol of | −224.3 | – | – | – |
per 1 mol of | −112.2 | – | – | – |
Changes in aqueous solution
- Reaction of barium iodide and potassium permanganate under neutral 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 | 49.6 | – | – | – |
per 1 mol of | 9.92 | – | – | – |
per 1 mol of | 24.8 | – | – | – |
per 1 mol of | 9.92 | – | – | – |
per 1 mol of | 9.92 | – | – | – |
| 12.4 | – | – | – | |
per 1 mol of | 49.6 | – | – | – |
per 1 mol of | 24.8 | – | – | – |
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 |
|---|---|---|---|---|
| BaI2 (cr) | -602.1[1] | – | – | – |
| BaI2 (g) | -326[1] | -377[1] | 343[1] | 61.5[1] |
| BaI2 (ai) | -648.02[1] | -663.92[1] | 232.2[1] | – |
| BaI2 (cr) 1 hydrate | -919.2[1] | – | – | – |
| BaI2 (cr) 2 hydrate | -1216.7[1] | – | – | – |
| BaI2 (cr) 2.5 hydrate | -1363.6[1] | – | – | – |
| BaI2 (cr) 7 hydrate | -2676.5[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] |
| 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] |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (l):Liquid
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 |
|---|---|---|---|---|
| Ba(OH)2 (cr) | -944.7[1] | – | – | – |
| Ba(OH)2 (g) | -586[1] | – | – | – |
| Ba(OH)2 (cr) 1 hydrate | -1248.5[1] | – | – | – |
| Ba(OH)2 (cr) 3 hydrate | -1849.3[1] | – | – | – |
| Ba(OH)2 (cr) 8 hydrate | -3342.2[1] | -2792.8[1] | 427[1] | – |
| (cr) | 0[1] | 0[1] | 116.135[1] | 54.438[1] |
| (g) | 62.438[1] | 19.327[1] | 260.69[1] | 36.90[1] |
| (ao) | 22.6[1] | 16.40[1] | 137.2[1] | – |
| Mn2O3 (cr) | -959.0[1] | -881.1[1] | 110.5[1] | 107.65[1] |
| KI (cr) | -327.900[1] | -324.892[1] | 106.32[1] | 52.93[1] |
| KI (g) | -125.5[1] | -166.1[1] | 258.3[1] | 37.11[1] |
| KI (ai) | -307.57[1] | -334.85[1] | 213.8[1] | -120.5[1] |
* (cr):Crystalline solid, (g):Gas, (ao):Un-ionized aqueous solution, (ai):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°, -602.1 kJ · mol−1
- ^ ΔfH°, -326. kJ · mol−1
- ^ ΔfG°, -377. kJ · mol−1
- ^ S°, 343. J · K−1 · mol−1
- ^ Cp°, 61.5 J · K−1 · mol−1
- ^ ΔfH°, -648.02 kJ · mol−1
- ^ ΔfG°, -663.92 kJ · mol−1
- ^ S°, 232.2 J · K−1 · mol−1
- ^ ΔfH°, -919.2 kJ · mol−1
- ^ ΔfH°, -1216.7 kJ · mol−1
- ^ ΔfH°, -1363.6 kJ · mol−1
- ^ ΔfH°, -2676.5 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°, -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°, -944.7 kJ · mol−1
- ^ ΔfH°, -586. kJ · mol−1
- ^ ΔfH°, -1248.5 kJ · mol−1
- ^ ΔfH°, -1849.3 kJ · mol−1
- ^ ΔfH°, -3342.2 kJ · mol−1
- ^ ΔfG°, -2792.8 kJ · mol−1
- ^ S°, 427. J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 116.135 J · K−1 · mol−1
- ^ Cp°, 54.438 J · K−1 · mol−1
- ^ ΔfH°, 62.438 kJ · mol−1
- ^ ΔfG°, 19.327 kJ · mol−1
- ^ S°, 260.69 J · K−1 · mol−1
- ^ Cp°, 36.90 J · K−1 · mol−1
- ^ ΔfH°, 22.6 kJ · mol−1
- ^ ΔfG°, 16.40 kJ · mol−1
- ^ S°, 137.2 J · K−1 · mol−1
- ^ ΔfH°, -959.0 kJ · mol−1
- ^ ΔfG°, -881.1 kJ · mol−1
- ^ S°, 110.5 J · K−1 · mol−1
- ^ Cp°, 107.65 J · K−1 · mol−1
- ^ ΔfH°, -327.900 kJ · mol−1
- ^ ΔfG°, -324.892 kJ · mol−1
- ^ S°, 106.32 J · K−1 · mol−1
- ^ Cp°, 52.93 J · K−1 · mol−1
- ^ ΔfH°, -125.5 kJ · mol−1
- ^ ΔfG°, -166.1 kJ · mol−1
- ^ S°, 258.3 J · K−1 · mol−1
- ^ Cp°, 37.11 J · K−1 · mol−1
- ^ ΔfH°, -307.57 kJ · mol−1
- ^ ΔfG°, -334.85 kJ · mol−1
- ^ S°, 213.8 J · K−1 · mol−1
- ^ Cp°, -120.5 J · K−1 · mol−1