Iron(II) to Iron(III) Oxidation by Oxygen

4Fe2+ + O2 + 4H+ → 4Fe3+ + 2H2O

अवलोकन

Ferrous ions (Fe²⁺) are oxidized to ferric ions (Fe³⁺) by dissolved oxygen in acidic solution. This reaction is responsible for the yellowing of iron-containing groundwater upon exposure to air. The green Fe²⁺ solution turns yellow-brown as Fe³⁺ forms.

प्रतिभागी

भूमिका पदार्थ गुणांक अवस्था
अभिकारक Oxygen O 1 (g)
उत्पाद Water H₂O 2 (l)

रोजमर्रा का उदाहरण

Well water that is clear underground but turns rusty brown when left standing is undergoing this oxidation of dissolved iron(II) by air.

औद्योगिक महत्व

Iron(II)/iron(III) redox chemistry is fundamental to water treatment, geochemistry, soil science, and corrosion engineering.

गुण

प्रकार
Redox
प्रतिवर्ती
नहीं
ऊर्जा
ऊष्माक्षेपी
ΔH
-176.0 kJ/mol

संबंधित अभिक्रियाएँ

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 Iodine and Sodium Thiosulfate Titration Displacement of Hydrogen from Acid by Magnesium

Frequently Asked Questions

What is the equation for Iron(II) to Iron(III) Oxidation by Oxygen?
The balanced equation is: 4Fe²⁺ + O₂ + 4H⁺ → 4Fe³⁺ + 2H₂O.
What type of reaction is Iron(II) to Iron(III) Oxidation by Oxygen?
Iron(II) to Iron(III) Oxidation by Oxygen is a redox reaction.
Is Iron(II) to Iron(III) Oxidation by Oxygen exothermic or endothermic?
Iron(II) to Iron(III) Oxidation by Oxygen is exothermic (releases energy). The enthalpy change (ΔH) is -176.0 kJ/mol.