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3Mg(NO2)2 + 2KMnO4 + 16H+ → 3Mg2+ + 4NO2+ + 2Mn3+ + 2KNO2 + 8H2O

Reaction of magnesium nitrite and potassium permanganate under acidic condition
3Mg(NO2)2Magnesium nitrite + 2KMnO4Potassium permanganate + 16H+Hydrogen ion
3Mg2+Magnesium ion + 4NO2+Nitronium ion + 2Mn3+Manganese(III) ion + 2KNO2Potassium nitrite + 8H2OWater

The reaction of magnesium nitrite, potassium permanganate, and hydrogen ion yields magnesium ion, nitronium ion, manganese(III) ion, potassium nitrite, and water (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

Reaction of magnesium nitrite and potassium permanganate under acidic condition
3Mg(NO2)2Magnesium nitrite + 2KMnO4Potassium permanganate + 16H+Hydrogen ion
3Mg2+Magnesium ion + 4NO2+Nitronium ion + 2Mn3+Manganese(III) ion + 2KNO2Potassium nitrite + 8H2OWater

General equation

Reaction of oxidizable species and oxidizing species under acidic condition
Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H+Non-redox agent
ProductOxidation product + ProductReduction product + H2ONon-redox product

Oxidation state of each atom

Reaction of magnesium nitrite and potassium permanganate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Mg(NO2)2Magnesium nitrite3
Reducing
Oxidizable
KMnO4Potassium permanganate2
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion16
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
Mg2+Magnesium ion3
NO2+Nitronium ion4
Oxidized
Mn3+Manganese(III) ion2
Reduced
KNO2Potassium nitrite2
H2OWater8
Water

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
Mg(NO2)2
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, (g):Gas, (ao):Un-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
Mg2+ (g)2348.504[1]
Mg2+ (ao)-466.85[1]-454.8[1]-138.1[1]
NO2+ (g)967.8[1]
Mn3+ (g)5776.4[1]
KNO2 (cr)
rhombic
-369.82[1]-306.55[1]152.09[1]107.40[1]
KNO2 (ai)-356.9[1]-315.4[1]225.5[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, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (ai):Ionized aqueous solution, (l):Liquid

References

List of references

  1. 1