Thermal Decomposition of Potassium Chlorate

2KClO3 → 2KCl + 3O2

Descripción general

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

Rol Sustancia Coeficiente Estado
Producto Potassium Chloride KCl 2 (s)
Producto Oxygen O 3 (g)

Ejemplo cotidiano

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

Importancia industrial

Método de laboratorio clásico para la generación de oxígeno y en la fabricación de fósforos y pirotecnia.

Propiedades

Tipo
Decomposition
Reversible
No
Energía
Endotérmico
ΔH
89,4 kJ/mol
Catalizador
Manganese dioxide (MnO₂)

Reacciones relacionadas

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)).