Thermal Decomposition of Potassium Permanganate

2KMnO4 → K2MnO4 + MnO2 + O2

概述

Potassium permanganate, a deep purple crystalline solid, decomposes when heated above 240 C to form potassium manganate, manganese dioxide, and oxygen gas. This is one of the most visually striking decomposition reactions, as the purple solid transforms to green and brown products while releasing gas.

参与者

角色 物质 系数 状态
产物 Oxygen O 1 (g)

日常示例

Potassium permanganate solution is used as an antiseptic wound wash and water purification agent in camping and survival situations.

工业重要性

高锰酸钾用于水处理中去除异味、有机物氧化降解，以及作为工业氧化剂和消毒剂，应用广泛。

属性

类型
Decomposition
可逆
否
能量
吸热
ΔH
171.0 kJ/mol

相关反应

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

Frequently Asked Questions

What is the equation for Thermal Decomposition of Potassium Permanganate?
The balanced equation is: 2KMnO₄ → K₂MnO₄ + MnO₂ + O₂.
What type of reaction is Thermal Decomposition of Potassium Permanganate?
Thermal Decomposition of Potassium Permanganate is a decomposition reaction.
Is Thermal Decomposition of Potassium Permanganate exothermic or endothermic?
Thermal Decomposition of Potassium Permanganate is endothermic (absorbs energy). The enthalpy change (ΔH) is 171.0 kJ/mol.