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8HMnO4 + 3e → Mn3+ + 4H2O + 7MnO42−

Reduction of hydrogenmanganate ion
8HMnO4Hydrogenmanganate ion + 3eElectron
Mn3+Manganese(III) ion + 4H2OWater + 7MnO42−Manganate ion

Reduction of hydrogenmanganate ion yields manganese(III) ion, water, and manganate ion (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

Reduction of hydrogenmanganate ion
8HMnO4Hydrogenmanganate ion + 3eElectron
Mn3+Manganese(III) ion + 4H2OWater + 7MnO42−Manganate ion

General equation

Reduction of reducible species
ReactantOxidizing agent + e
ProductReduction product

Oxidation state of each atom

Reduction of hydrogenmanganate ion

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
HMnO4Hydrogenmanganate ion8
Oxidizing
eElectron3
Electron

Products

Chemical formulaNameCoefficientTypeType in general
equation
Mn3+Manganese(III) ion1
Reduced
H2OWater4
MnO42−Manganate ion7

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
HMnO4
e

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
Mn3+ (g)5776.4[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]
MnO42− (ao)-653[1]-500.7[1]59[1]
* (g):Gas, (cr):Crystalline solid, (l):Liquid, (ao):Un-ionized aqueous solution

References

List of references

  1. 1