Hydrogen Peroxide as Oxidizing Agent (Acidic)

H₂O₂ + 2H⁺ + 2I⁻ → I₂ + 2H₂O

Visão geral

Hydrogen peroxide oxidizes iodide ions to iodine in acidic solution. H₂O₂ acts as the oxidizing agent, being reduced to water. The appearance of brown iodine (or blue-black with starch indicator) demonstrates the oxidizing power of H₂O₂. This reaction is used in iodometric analysis.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Hydrogen Peroxide H₂O₂	1	(aq)
Reagente	Iodine I	2	(aq)
Produto	Water H₂O	2	(l)

Exemplo do cotidiano

The iodine clock reaction, a popular chemistry demonstration with sudden color changes, uses variations of this H₂O₂-iodide reaction.

Importância industrial

Compreender o H₂O₂ como oxidante é importante para o branqueamento de pasta de papel, o tratamento de água e a síntese orgânica. A reação do relógio de iodo é uma das demonstrações mais populares para ensinar cinética química.

Propriedades

Tipo: Redox
Reversível: Não
Energia: Exotérmico
ΔH: -210,0 kJ/mol

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Frequently Asked Questions

What is the equation for Hydrogen Peroxide as Oxidizing Agent (Acidic)?

The balanced equation is: H₂O₂ + 2H⁺ + 2I⁻ → I₂ + 2H₂O.

What type of reaction is Hydrogen Peroxide as Oxidizing Agent (Acidic)?

Hydrogen Peroxide as Oxidizing Agent (Acidic) is a redox reaction.

Is Hydrogen Peroxide as Oxidizing Agent (Acidic) exothermic or endothermic?

Hydrogen Peroxide as Oxidizing Agent (Acidic) is exothermic (releases energy). The enthalpy change (ΔH) is -210.0 kJ/mol.