Permanganate Oxidation of Oxalic Acid

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

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Oxalic Acid C₂H₂O₄	5	(aq)
Sản phẩm	Water H₂O	8	(l)
Sản phẩm	Carbon Dioxide CO₂	10	(g)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

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

Tính chất

Loại: Redox
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -489,0 kJ/mol

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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.