3CuCl2 + 6KMnO4 → 3CuO + 4KClO3 + 3Mn2O3 + 2KCl
Last updated:
The reaction of copper(II) chloride and potassium permanganate yields copper(II) oxide, potassium chlorate, manganese(III) oxide, and potassium chloride (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 copper(II) 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 copper(II) chloride and potassium permanganate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CuCl2 | Copper(II) chloride | 3 | Reducing | Hardly oxidizable |
| KMnO4 | Potassium permanganate | 6 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CuO | Copper(II) oxide | 3 | – | – |
| KClO3 | Potassium chlorate | 4 | Oxidized | – |
| Mn2O3 | Manganese(III) oxide | 3 | Reduced | – |
| KCl | Potassium chloride | 2 | – | – |
Thermodynamic changes
Changes in standard condition
- Reaction of copper(II) chloride and potassium permanganate◆
ΔrG −83.0 kJ/mol K 3.48 × 1014 pK −14.54
| 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 | −129.8 | −83.0 | −157.5 | 32.39 |
per 1 mol of | −43.27 | −27.7 | −52.50 | 10.80 |
per 1 mol of | −21.63 | −13.8 | −26.25 | 5.398 |
per 1 mol of | −43.27 | −27.7 | −52.50 | 10.80 |
per 1 mol of | −32.45 | −20.8 | −39.38 | 8.098 |
per 1 mol of | −43.27 | −27.7 | −52.50 | 10.80 |
per 1 mol of | −64.90 | −41.5 | −78.75 | 16.20 |
Changes in aqueous solution
- Reaction of copper(II) chloride and potassium permanganate◆
ΔrG −49.6 kJ/mol K 4.89 × 108 pK −8.69
| 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 | – | −16.5 | – | – |
per 1 mol of | – | −8.27 | – | – |
per 1 mol of | – | −16.5 | – | – |
per 1 mol of | – | −12.4 | – | – |
per 1 mol of | – | −16.5 | – | – |
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 |
|---|---|---|---|---|
| CuCl2 (cr) | -220.1[1] | -175.7[1] | 108.07[1] | 71.88[1] |
| CuCl2 (ao) | – | -197.9[1] | – | – |
| CuCl2 (cr) 2 hydrate | -821.3[1] | -655.9[1] | 167[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, (ao):Un-ionized 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 |
|---|---|---|---|---|
| CuO (cr) | -157.3[1] | -129.7[1] | 42.63[1] | 42.30[1] |
| KClO3 (cr) | -397.73[1] | -296.25[1] | 143.1[1] | 100.25[1] |
| KClO3 (ai) | -356.35[1] | -291.22[1] | 264.8[1] | – |
| Mn2O3 (cr) | -959.0[1] | -881.1[1] | 110.5[1] | 107.65[1] |
| KCl (cr) | -436.747[1] | -409.14[1] | 82.59[1] | 51.30[1] |
| KCl (g) | -214.14[1] | -233.0[1] | 239.10[1] | 36.48[1] |
| KCl (ai) | -419.53[1] | -414.49[1] | 159.0[1] | -114.6[1] |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas
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°, -220.1 kJ · mol−1
- ^ ΔfG°, -175.7 kJ · mol−1
- ^ S°, 108.07 J · K−1 · mol−1
- ^ Cp°, 71.88 J · K−1 · mol−1
- ^ ΔfG°, -197.9 kJ · mol−1
- ^ ΔfH°, -821.3 kJ · mol−1
- ^ ΔfG°, -655.9 kJ · mol−1
- ^ S°, 167. 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°, -157.3 kJ · mol−1
- ^ ΔfG°, -129.7 kJ · mol−1
- ^ S°, 42.63 J · K−1 · mol−1
- ^ Cp°, 42.30 J · K−1 · mol−1
- ^ ΔfH°, -397.73 kJ · mol−1
- ^ ΔfG°, -296.25 kJ · mol−1
- ^ S°, 143.1 J · K−1 · mol−1
- ^ Cp°, 100.25 J · K−1 · mol−1
- ^ ΔfH°, -356.35 kJ · mol−1
- ^ ΔfG°, -291.22 kJ · mol−1
- ^ S°, 264.8 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°, -436.747 kJ · mol−1
- ^ ΔfG°, -409.14 kJ · mol−1
- ^ S°, 82.59 J · K−1 · mol−1
- ^ Cp°, 51.30 J · K−1 · mol−1
- ^ ΔfH°, -214.14 kJ · mol−1
- ^ ΔfG°, -233.0 kJ · mol−1
- ^ S°, 239.10 J · K−1 · mol−1
- ^ Cp°, 36.48 J · K−1 · mol−1
- ^ ΔfH°, -419.53 kJ · mol−1
- ^ ΔfG°, -414.49 kJ · mol−1
- ^ S°, 159.0 J · K−1 · mol−1
- ^ Cp°, -114.6 J · K−1 · mol−1