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CaCl2 + 4KMnO4 → Ca(MnO4)2 + Cl2↑ + 2K2MnO4

The reaction of calcium chloride and potassium permanganate yields calcium permanganate, chlorine, and potassium manganate (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:

Table of contents
  1. 1Reaction data
  2. 2Thermodynamic changes
  3. 3References
  4. 4Related reactions
  5. 5Related categories

Reaction data

Chemical equation

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

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CaCl2Calcium chloride1
Reducing
Hardly oxidizable
KMnO4Potassium permanganate4
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
Ca(MnO4)2Calcium permanganate1
Cl2Chlorine1
Oxidized
K2MnO4Potassium manganate2
Reduced

Thermodynamic changes

Thermodynamic data of reactants

Chemical formulaStandard 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
CaCl2 (cr)-795.8[1]-748.1[1]104.6[1]72.59[1]
CaCl2 (g)-471.5[1]-479.24[1]290.27[1]59.33[1]
CaCl2 (ai)-877.13[1]-816.01[1]59.8[1]
CaCl2 (cr)
1 hydrate
-1109.2[1]
CaCl2 (cr)
2 hydrate
-1402.9[1]
CaCl2 (cr)
4 hydrate
-2009.6[1]
CaCl2 (cr)
6 hydrate
-2607.9[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 formulaStandard 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
Ca(MnO4)2
Cl2 (g)0[1]0[1]223.066[1]33.907[1]
Cl2 (ao)-23.4[1]6.94[1]121[1]
K2MnO4
* (g):Gas, (ao):Un-ionized aqueous solution

References

List of references

  1. 1