Permanganate Oxidation of Oxalic Acid
2MnO4− + 5C2O42− + 16H+ → 2Mn2+ + 10CO2 + 8H2O
Обзор
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.
Участники
| Роль | Вещество | Коэффициент | Состояние |
|---|---|---|---|
| Реагент | Oxalic Acid C₂H₂O₄ | 5 | (aq) |
| Продукт | Water H₂O | 8 | (l) |
| Продукт | Carbon Dioxide CO₂ | 10 | (g) |
Пример из жизни
This reaction demonstrates autocatalysis: the first drops of permanganate decolorize slowly, but later drops disappear almost instantly.
Промышленное значение
Permanganate-oxalate titration is used to standardize permanganate solutions and as a teaching example of autocatalytic kinetics.
Свойства
- Тип
- Redox
- Обратимая
- Нет
- Энергия
- Экзотермическая
- ΔH
- -489,0 kJ/mol
Связанные реакции
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)
Copper Oxidation by Nitric Acid
Hypochlorite Oxidation of Hydrogen Peroxide
Hydrogen Peroxide as Oxidizing Agent (Acidic)
Hydrogen Peroxide Disproportionation
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.