Thermal Decomposition of Potassium Permanganate

2KMnO4 → K2MnO4 + MnO2 + O2

概要

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.

参加者

役割 物質 係数 状態
生成物 Oxygen O 1 (g)

日常の例

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

産業上の重要性

水処理の味・臭気制御、分析化学の酸化剤、有機合成に使用される。分解特性の理解は安全な保管に重要である。

特性

タイプ
Decomposition
可逆的
いいえ
エネルギー
吸熱性
ΔH
171.0 kJ/mol

関連する反応

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.