3BaBr2 + 2KMnO4 🔥→ 3BaO + 3Br2 + 2MnO2 + K2O
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- Reaction of barium bromide and potassium permanganate
The reaction of barium bromide and potassium permanganate yields barium oxide, , manganese(IV) oxide, and potassium oxide (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 bromide and potassium permanganate
General equation
- Reaction of hardly oxidizable species and oxidizing species
- Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of barium bromide and potassium permanganate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| BaBr2 | Barium bromide | 3 | Reducing | Hardly oxidizable |
| KMnO4 | Potassium permanganate | 2 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| BaO | Barium oxide | 3 | – | – |
| 3 | Oxidized | – | ||
| MnO2 | Manganese(IV) oxide | 2 | Reduced | – |
| K2O | Potassium oxide | 1 | – | – |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of barium bromide and potassium permanganate◆
ΔrG 857.9 kJ/mol K 0.50 × 10−150 pK 150.30
| 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 | 884.2 | 857.9 | 87 | – |
per 1 mol of | 294.7 | 286.0 | 29 | – |
per 1 mol of | 442.1 | 428.9 | 44 | – |
per 1 mol of | 294.7 | 286.0 | 29 | – |
| 294.7 | 286.0 | 29 | – | |
per 1 mol of | 442.1 | 428.9 | 44 | – |
per 1 mol of | 884.2 | 857.9 | 87 | – |
Changes in standard condition (2)
- Reaction of barium bromide and potassium permanganate
| 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 | 919.3 | – | – | – |
per 1 mol of | 306.4 | – | – | – |
per 1 mol of | 459.6 | – | – | – |
per 1 mol of | 306.4 | – | – | – |
| 306.4 | – | – | – | |
per 1 mol of | 459.6 | – | – | – |
per 1 mol of | 919.3 | – | – | – |
Changes in aqueous solution
- Reaction of barium bromide and potassium permanganate◆
ΔrG 951.2 kJ/mol K 0.23 × 10−166 pK 166.64
| 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 | 860.0 | 951.2 | −307.9 | – |
per 1 mol of | 286.7 | 317.1 | −102.6 | – |
per 1 mol of | 430.0 | 475.6 | −153.9 | – |
per 1 mol of | 286.7 | 317.1 | −102.6 | – |
| 286.7 | 317.1 | −102.6 | – | |
per 1 mol of | 430.0 | 475.6 | −153.9 | – |
per 1 mol of | 860.0 | 951.2 | −307.9 | – |
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 |
|---|---|---|---|---|
| BaBr2 (cr) | -757.3[1] | -736.8[1] | 146[1] | – |
| BaBr2 (g) | -439[1] | -473[1] | 331[1] | 61.5[1] |
| BaBr2 (ai) | -780.73[1] | -768.68[1] | 174.5[1] | – |
| BaBr2 (cr) 1 hydrate | -1068.2[1] | – | – | – |
| BaBr2 (cr) 2 hydrate | -1366.1[1] | -1230.4[1] | 226[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] |
* (cr):Crystalline solid, (g):Gas, (ai):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 |
|---|---|---|---|---|
| BaO (cr) | -553.5[1] | -525.1[1] | 70.42[1] | 47.78[1] |
| BaO (g) | -117[1] | – | – | 33.1[1] |
| (cr) | – | – | – | – |
| (l) | 0[1] | 0[1] | 152.231[1] | 75.689[1] |
| (g) | 30.907[1] | 3.110[1] | 245.463[1] | 36.02[1] |
| (ao) | -2.59[1] | 3.93[1] | 130.5[1] | – |
| MnO2 (cr) | -520.03[1] | -465.14[1] | 53.05[1] | 54.14[1] |
| MnO2 (am) precipitated | -502.5[1] | – | – | – |
| K2O (cr) | -361.5[1] | -322.1[2] | 94.1[2] | 83.7[2] |
| K2O (g) | -63[1] | – | – | – |
* (cr):Crystalline solid, (g):Gas, (l):Liquid, (ao):Un-ionized aqueous solution, (am):Amorphous solid
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°, -757.3 kJ · mol−1
- ^ ΔfG°, -736.8 kJ · mol−1
- ^ S°, 146. J · K−1 · mol−1
- ^ ΔfH°, -439. kJ · mol−1
- ^ ΔfG°, -473. kJ · mol−1
- ^ S°, 331. J · K−1 · mol−1
- ^ Cp°, 61.5 J · K−1 · mol−1
- ^ ΔfH°, -780.73 kJ · mol−1
- ^ ΔfG°, -768.68 kJ · mol−1
- ^ S°, 174.5 J · K−1 · mol−1
- ^ ΔfH°, -1068.2 kJ · mol−1
- ^ ΔfH°, -1366.1 kJ · mol−1
- ^ ΔfG°, -1230.4 kJ · mol−1
- ^ S°, 226. J · K−1 · 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°, -553.5 kJ · mol−1
- ^ ΔfG°, -525.1 kJ · mol−1
- ^ S°, 70.42 J · K−1 · mol−1
- ^ Cp°, 47.78 J · K−1 · mol−1
- ^ ΔfH°, -117. kJ · mol−1
- ^ Cp°, 33.1 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 152.231 J · K−1 · mol−1
- ^ Cp°, 75.689 J · K−1 · mol−1
- ^ ΔfH°, 30.907 kJ · mol−1
- ^ ΔfG°, 3.110 kJ · mol−1
- ^ S°, 245.463 J · K−1 · mol−1
- ^ Cp°, 36.02 J · K−1 · mol−1
- ^ ΔfH°, -2.59 kJ · mol−1
- ^ ΔfG°, 3.93 kJ · mol−1
- ^ S°, 130.5 J · K−1 · mol−1
- ^ ΔfH°, -520.03 kJ · mol−1
- ^ ΔfG°, -465.14 kJ · mol−1
- ^ S°, 53.05 J · K−1 · mol−1
- ^ Cp°, 54.14 J · K−1 · mol−1
- ^ ΔfH°, -502.5 kJ · mol−1
- ^ ΔfH°, -361.5 kJ · mol−1
- ^ ΔfH°, -63. kJ · mol−1
- 2James G. Speight (2017)Lange's Handbook of Chemistry, 17th editionMcGraw Hill Education
- ^ ΔfG°, -322.1 kJ · mol−1 - p.280
- ^ S°, 94.1 J · K−1 · mol−1 - p.280
- ^ Cp°, 83.7 J · K−1 · mol−1 - p.280