Thermal Decomposition of Potassium Chlorate

2KClO₃ → 2KCl + 3O₂

Visão geral

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.

Participantes

Papel	Substância	Coeficiente	Estado
Produto	Potassium Chloride KCl	2	(s)
Produto	Oxygen O	3	(g)

Exemplo do cotidiano

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

Importância industrial

Utilizado em pirotecnia, fósforos e como fonte laboratorial de oxigénio. O clorato de potássio foi historicamente utilizado como explosivo primário, embora alternativas mais seguras o tenham substituído.

Propriedades

Tipo: Decomposition
Reversível: Não
Energia: Endotérmico
ΔH: 89,4 kJ/mol
Catalisador: Manganese dioxide (MnO₂)

Reações relacionadas

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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)).