4PtCl4 + 2KMnO4 → K2[PtCl6] + 3PtO2 + 5Cl2↑ + 2MnO
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The reaction of platinum(IV) chloride and potassium permanganate yields potassium hexachloridoplatinate(IV), platinum(IV) oxide, , and manganese(II) 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 platinum(IV) chloride 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 platinum(IV) chloride and potassium permanganate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| PtCl4 | Platinum(IV) chloride | 4 | Reducing | Hardly oxidizable |
| KMnO4 | Potassium permanganate | 2 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| K2[PtCl6] | Potassium hexachloridoplatinate(IV) | 1 | – | – |
| PtO2 | Platinum(IV) oxide | 3 | – | – |
| 5 | Oxidized | – | ||
| MnO | Manganese(II) oxide | 2 | Reduced | – |
Thermodynamic changes
Changes in aqueous solution (1)
- Reaction of platinum(IV) chloride 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 | 1415.7 | – | – | – |
per 1 mol of | 353.93 | – | – | – |
per 1 mol of | 707.85 | – | – | – |
per 1 mol of | 1415.7 | – | – | – |
per 1 mol of | 471.90 | – | – | – |
| 283.14 | – | – | – | |
per 1 mol of | 707.85 | – | – | – |
Changes in aqueous solution (2)
- Reaction of platinum(IV) chloride 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 | 1298.7 | – | – | – |
per 1 mol of | 324.68 | – | – | – |
per 1 mol of | 649.35 | – | – | – |
per 1 mol of | 1298.7 | – | – | – |
per 1 mol of | 432.90 | – | – | – |
| 259.74 | – | – | – | |
per 1 mol of | 649.35 | – | – | – |
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 |
|---|---|---|---|---|
| PtCl4 (cr) | -231.8[1] | – | – | – |
| PtCl4 (aq) | -314.2[1] | – | – | – |
| PtCl4 (cr) 5 hydrate | -1752.7[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, (aq):Aqueous solution, (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 |
|---|---|---|---|---|
| K2[PtCl6] (cr) | -1229.3[1] | -1078.5[1] | 333.9[1] | 205.60[1] |
| K2[PtCl6] (ai) | -1172.8[1] | -1049.2[1] | 424.7[1] | – |
| PtO2 (g) | 171.5[1] | 167.8[1] | – | – |
| (g) | 0[1] | 0[1] | 223.066[1] | 33.907[1] |
| (ao) | -23.4[1] | 6.94[1] | 121[1] | – |
| MnO (cr) | -385.22[1] | -362.90[1] | 59.71[1] | 45.44[1] |
| MnO (g) | 124.22[1] | – | – | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (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°, -231.8 kJ · mol−1
- ^ ΔfH°, -314.2 kJ · mol−1
- ^ ΔfH°, -1752.7 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°, -1229.3 kJ · mol−1
- ^ ΔfG°, -1078.5 kJ · mol−1
- ^ S°, 333.9 J · K−1 · mol−1
- ^ Cp°, 205.60 J · K−1 · mol−1
- ^ ΔfH°, -1172.8 kJ · mol−1
- ^ ΔfG°, -1049.2 kJ · mol−1
- ^ S°, 424.7 J · K−1 · mol−1
- ^ ΔfH°, 171.5 kJ · mol−1
- ^ ΔfG°, 167.8 kJ · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 223.066 J · K−1 · mol−1
- ^ Cp°, 33.907 J · K−1 · mol−1
- ^ ΔfH°, -23.4 kJ · mol−1
- ^ ΔfG°, 6.94 kJ · mol−1
- ^ S°, 121. J · K−1 · mol−1
- ^ ΔfH°, -385.22 kJ · mol−1
- ^ ΔfG°, -362.90 kJ · mol−1
- ^ S°, 59.71 J · K−1 · mol−1
- ^ Cp°, 45.44 J · K−1 · mol−1
- ^ ΔfH°, 124.22 kJ · mol−1