Thermal Decomposition of Potassium Chlorate

2KClO3 → 2KCl + 3O2

概要

Potassium chlorate decomposes when heated (with MnO2 catalyst at ~200 C, or without catalyst at ~400 C) to form potassium chloride and oxygen gas. This reaction was historically used as a laboratory source of oxygen gas before compressed gas cylinders became widely available.

参加者

役割 物質 係数 状態
生成物 Potassium Chloride KCl 2 (s)
生成物 Oxygen O 3 (g)

日常の例

Safety matches contain potassium chlorate as the oxidizer, which decomposes and releases oxygen when struck to help ignite the match.

産業上の重要性

花火、マッチ、実験室の酸素源として使用される。塩素酸カリウムは歴史的に起爆薬として使用されたが、より安全な代替品にほぼ置き換えられた。

特性

タイプ
Decomposition
可逆的
いいえ
エネルギー
吸熱性
ΔH
89.4 kJ/mol
触媒
Manganese dioxide (MnO₂)

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 Chlorate?
The balanced equation is: 2KClO₃ → 2KCl + 3O₂.
What type of reaction is Thermal Decomposition of Potassium Chlorate?
Thermal Decomposition of Potassium Chlorate is a decomposition reaction.
Is Thermal Decomposition of Potassium Chlorate exothermic or endothermic?
Thermal Decomposition of Potassium Chlorate is endothermic (absorbs energy). The enthalpy change (ΔH) is 89.4 kJ/mol.
What conditions are needed for Thermal Decomposition of Potassium Chlorate?
This reaction requires a catalyst (Manganese dioxide (MnO₂)).