Thermal Decomposition of Lead(IV) Oxide

2PbO₂ → 2PbO + O₂

Visão geral

Lead(IV) oxide (lead dioxide) decomposes when heated above 290 C to form lead(II) oxide and oxygen. This decomposition reflects the instability of the +4 oxidation state for lead. Lead dioxide is a strong oxidizer used in lead-acid batteries.

Participantes

Papel	Substância	Coeficiente	Estado
Produto	Oxygen O	1	(g)

Exemplo do cotidiano

The positive plates of car batteries contain lead dioxide, which undergoes reduction (not this thermal decomposition) during discharge.

Importância industrial

Compreender a estabilidade do PbO₂ é fundamental para o design de baterias de chumbo-ácido. O dióxido de chumbo é também utilizado como material de elétrodo no tratamento de água e síntese química.

Propriedades

Tipo: Decomposition
Reversível: Não
Energia: Endotérmico
ΔH: 118,4 kJ/mol

Reações relacionadas

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Frequently Asked Questions

What is the equation for Thermal Decomposition of Lead(IV) Oxide?

The balanced equation is: 2PbO₂ → 2PbO + O₂.

What type of reaction is Thermal Decomposition of Lead(IV) Oxide?

Thermal Decomposition of Lead(IV) Oxide is a decomposition reaction.

Is Thermal Decomposition of Lead(IV) Oxide exothermic or endothermic?

Thermal Decomposition of Lead(IV) Oxide is endothermic (absorbs energy). The enthalpy change (ΔH) is 118.4 kJ/mol.