Formation of Sodium Peroxide

2Na + O2 → Na2O2

Visão geral

When sodium burns in excess oxygen, it forms sodium peroxide rather than sodium oxide. This yellowish-white compound is a powerful oxidizer. Unlike the lighter alkali metals, sodium preferentially forms the peroxide due to the size ratio of the ions.

Participantes

Papel Substância Coeficiente Estado
Reagente Oxygen O 1 (g)
Reagente Sodium Na 2 (s)

Exemplo do cotidiano

Sodium peroxide has been used in submarine air purification systems, reacting with CO2 to release oxygen.

Importância industrial

Utilizado como agente gerador de oxigénio em aparelhos de respiração de emergência, como agente branqueador e em síntese orgânica. O Na₂O₂ reage com o CO₂ e H₂O para libertar O₂, tornando-o valioso em situações de resgate.

Propriedades

Tipo
Synthesis
Reversível
Não
Energia
Exotérmico
ΔH
-510,9 kJ/mol

Reações relacionadas

Formation of Nitrogen Dioxide Formation of Potassium Chloride Formation of Sodium Bicarbonate Formation of Silicon Dioxide Formation of Tungsten Carbide Formation of Copper(II) Sulfide Formation of Sulfur Dioxide Formation of Hydrogen Sulfide Formation of Barium Oxide Formation of Carbon Monoxide

Frequently Asked Questions

What is the equation for Formation of Sodium Peroxide?
The balanced equation is: 2Na + O₂ → Na₂O₂.
What type of reaction is Formation of Sodium Peroxide?
Formation of Sodium Peroxide is a synthesis reaction.
Is Formation of Sodium Peroxide exothermic or endothermic?
Formation of Sodium Peroxide is exothermic (releases energy). The enthalpy change (ΔH) is -510.9 kJ/mol.