AgBr + 2KMnO4 + 11H+ → Ag3+ + HBrO3 + 2Mn3+ + 2K+ + 5H2O
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- Reaction of silver(I) bromide and potassium permanganate under acidic condition
- AgBrSilver(I) bromide + 2KMnO4Potassium permanganate + 11H+Hydrogen ionAg3+Silver(III) ion + HBrO3Bromic acid + 2Mn3+Manganese(III) ion + 2K+Potassium ion + 5H2OWater⟶
The reaction of silver(I) bromide, potassium permanganate, and hydrogen ion yields silver(III) ion, bromic acid, manganese(III) ion, potassium ion, and water (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 silver(I) bromide and potassium permanganate under acidic condition
- AgBrSilver(I) bromide + 2KMnO4Potassium permanganate + 11H+Hydrogen ionAg3+Silver(III) ion + HBrO3Bromic acid + 2Mn3+Manganese(III) ion + 2K+Potassium ion + 5H2OWater⟶
General equation
- Reaction of hardly oxidizable species and oxidizing species under acidic condition
- Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H+Non-redox agent ⟶ ProductOxidation product + ProductReduction product + H2ONon-redox product
Oxidation state of each atom
- Reaction of silver(I) bromide and potassium permanganate under acidic condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| AgBr | Silver(I) bromide | 1 | Reducing | Hardly oxidizable |
| KMnO4 | Potassium permanganate | 2 | Oxidizing | Oxidizing under acidic condition |
| H+ | Hydrogen ion | 11 | – | Hydrogen ion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ag3+ | Silver(III) ion | 1 | Oxidized | – |
| HBrO3 | Bromic acid | 1 | Oxidized | – |
| Mn3+ | Manganese(III) ion | 2 | Reduced | – |
| K+ | Potassium ion | 2 | – | – |
| H2O | Water | 5 | – | Water |
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 |
|---|---|---|---|---|
| AgBr (cr) | -100.37[1] | -96.90[1] | 107.1[1] | 52.38[1] |
| AgBr (ai) | -15.98[1] | -26.86[1] | 155.2[1] | -120.1[1] |
| AgBr (ao) | – | -51.0[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, (ao):Un-ionized aqueous solution, (g):Gas
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 |
|---|---|---|---|---|
| Ag3+ (g) | 6467.6[1] | – | – | – |
| HBrO3 (ai) | -67.07[1] | 18.60[1] | 161.71[1] | – |
| Mn3+ (g) | 5776.4[1] | – | – | – |
| K+ (g) | 514.26[1] | – | – | – |
| K+ (ao) | -252.38[1] | -283.27[1] | 102.5[1] | 21.8[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] |
* (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (cr):Crystalline 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°, -100.37 kJ · mol−1
- ^ ΔfG°, -96.90 kJ · mol−1
- ^ S°, 107.1 J · K−1 · mol−1
- ^ Cp°, 52.38 J · K−1 · mol−1
- ^ ΔfH°, -15.98 kJ · mol−1
- ^ ΔfG°, -26.86 kJ · mol−1
- ^ S°, 155.2 J · K−1 · mol−1
- ^ Cp°, -120.1 J · K−1 · mol−1
- ^ ΔfG°, -51.0 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°, 6467.6 kJ · mol−1
- ^ ΔfH°, -67.07 kJ · mol−1
- ^ ΔfG°, 18.60 kJ · mol−1
- ^ S°, 161.71 J · K−1 · mol−1
- ^ ΔfH°, 5776.4 kJ · 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
- ^ 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