Fenton's Reaction
Fe2+ + H2O2 → Fe3+ + OH− + OH·
Visão geral
Fenton's reagent generates highly reactive hydroxyl radicals (OH·) from iron(II) and hydrogen peroxide. The hydroxyl radical is one of the strongest oxidizers known, capable of degrading virtually any organic compound. Fe²⁺ is oxidized to Fe³⁺ while H₂O₂ is reduced.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Hydrogen Peroxide H₂O₂ | 1 | (aq) |
Exemplo do cotidiano
Fenton's chemistry occurs naturally in the body when iron and hydrogen peroxide interact, which is why excess free iron can cause oxidative damage.
Importância industrial
O reagente de Fenton é utilizado no tratamento de águas residuais para degradar poluentes orgânicos recalcitrantes como corantes têxteis e pesticidas. É uma alternativa económica ao ozono para o tratamento de poluentes orgânicos persistentes.
Propriedades
- Tipo
- Redox
- Reversível
- Não
- Energia
- Exotérmico
- ΔH
- -40,0 kJ/mol
Reações 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)
Copper Oxidation by Nitric Acid
Hypochlorite Oxidation of Hydrogen Peroxide
Hydrogen Peroxide as Oxidizing Agent (Acidic)
Hydrogen Peroxide Disproportionation
Displacement of Hydrogen from Acid by Magnesium
Frequently Asked Questions
What is the equation for Fenton's Reaction?
The balanced equation is: Fe²⁺ + H₂O₂ → Fe³⁺ + OH⁻ + OH·.
What type of reaction is Fenton's Reaction?
Fenton's Reaction is a redox reaction.
Is Fenton's Reaction exothermic or endothermic?
Fenton's Reaction is exothermic (releases energy). The enthalpy change (ΔH) is -40.0 kJ/mol.