Hydrogen Peroxide as Oxidizing Agent (Acidic)

H2O2 + 2H+ + 2I− → I2 + 2H2O

Descripción general

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

Rol Sustancia Coeficiente Estado
Reactivo Hydrogen Peroxide H₂O₂ 1 (aq)
Reactivo Iodine I 2 (aq)
Producto Water H₂O 2 (l)

Ejemplo cotidiano

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

Importancia industrial

Comprender el H₂O₂ como oxidante es importante para el blanqueo de pulpa de papel, el tratamiento del agua, la síntesis química y como propelente de cohetes en sistemas de propulsión.

Propiedades

Tipo
Redox
Reversible
No
Energía
Exotérmico
ΔH
-210,0 kJ/mol

Reacciones relacionadas

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Copper Reduction of Silver Ion Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Chlorine Oxidation of Bromide Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Zinc Reduction of Silver Ion Displacement of Hydrogen from Acid by Magnesium

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.