Permanganate Reduction in Basic Solution

2MnO4− + H2O + 3e− → 2MnO2 + 4OH−

Descripción general

In basic or neutral solution, permanganate is reduced to manganese dioxide (MnO₂) rather than Mn²⁺. The purple solution produces a brown precipitate of MnO₂. This half-reaction is important in organic chemistry where KMnO₄ selectively oxidizes alkenes to diols under mild basic conditions (Baeyer test).

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Water H₂O 1 (l)

Ejemplo cotidiano

The Baeyer test uses cold dilute KMnO₄ to detect C=C double bonds in organic molecules, turning purple to brown with a precipitate.

Importancia industrial

Aplicado en el tratamiento de aguas, blanqueo de textiles y síntesis de precursores de compuestos de manganeso.

Propiedades

Tipo
Redox
Reversible
No
Energía
Exotérmico

Reacciones relacionadas

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Copper Reduction of Silver Ion Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Chlorine Oxidation of Bromide Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide as Oxidizing Agent (Acidic) Displacement of Hydrogen from Acid by Magnesium

Frequently Asked Questions

What is the equation for Permanganate Reduction in Basic Solution?
The balanced equation is: 2MnO₄⁻ + H₂O + 3e⁻ → 2MnO₂ + 4OH⁻.
What type of reaction is Permanganate Reduction in Basic Solution?
Permanganate Reduction in Basic Solution is a redox reaction.
Is Permanganate Reduction in Basic Solution exothermic or endothermic?
Permanganate Reduction in Basic Solution is exothermic (releases energy).