Thermal Decomposition of Potassium Chlorate

2KClO3 → 2KCl + 3O2

개요

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.

참여 물질

역할 물질 계수 상태
생성물 Potassium Chloride KCl 2 (s)
생성물 Oxygen O 3 (g)

일상 속 예시

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

산업적 중요성

불꽃놀이, 성냥, 실험실 산소 공급원으로 사용됩니다. 염소산칼륨은 역사적으로 1차 폭약으로 사용되었지만, 더 안전한 대안으로 대부분 대체되었습니다.

성질

유형
Decomposition
가역 반응
아니오
에너지
흡열
ΔH
89.4 kJ/mol
촉매
Manganese dioxide (MnO₂)

관련 반응

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)).