Permanganate Oxidation of Oxalic Acid

2MnO4− + 5C2O42− + 16H+ → 2Mn2+ + 10CO2 + 8H2O

نظرة عامة

Permanganate oxidizes oxalate to CO₂ while Mn(VII) is reduced to Mn(II). This reaction is autocatalytic: the Mn²⁺ product catalyzes the reaction, so it starts slowly and accelerates dramatically. The purple permanganate is decolorized as the reaction proceeds. It is a classic redox titration used in analytical chemistry.

المشاركون

الدور المادة المعامل الحالة
متفاعل Oxalic Acid C₂H₂O₄ 5 (aq)
منتج Water H₂O 8 (l)
منتج Carbon Dioxide CO₂ 10 (g)

مثال من الحياة اليومية

This reaction demonstrates autocatalysis: the first drops of permanganate decolorize slowly, but later drops disappear almost instantly.

الأهمية الصناعية

Permanganate-oxalate titration is used to standardize permanganate solutions and as a teaching example of autocatalytic kinetics.

الخصائص

النوع
Redox
قابل للعكس
لا
الطاقة
طارد للحرارة
ΔH
-489,0 kJ/mol

التفاعلات ذات الصلة

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 Oxidation of Oxalic Acid?
The balanced equation is: 2MnO₄⁻ + 5C₂O₄²⁻ + 16H⁺ → 2Mn²⁺ + 10CO₂ + 8H₂O.
What type of reaction is Permanganate Oxidation of Oxalic Acid?
Permanganate Oxidation of Oxalic Acid is a redox reaction.
Is Permanganate Oxidation of Oxalic Acid exothermic or endothermic?
Permanganate Oxidation of Oxalic Acid is exothermic (releases energy). The enthalpy change (ΔH) is -489.0 kJ/mol.