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The Rusting Process

The rusting process, primarily involving the oxidation of iron (Fe), can be represented through various chemical equations. When iron oxidizes, it transforms into ferrous ions (Fe²⁺) along with electrons: Fe → Fe²⁺ + 2e⁻. This process continues in the presence of water, where Fe²⁺ interacts with water to form iron hydroxide (Fe(OH)₂) and hydrogen ions (H⁺). The reactions can further progress to yield ferric oxide (Fe₂O₃), another form of rust. Understanding these chemical formulas is crucial in studying corrosion and developing prevention methods.

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The Rusting Process

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  1. The Rusting Process (Oxidation)

  2. Chemical Formulas • Fe → Fe2+ + 2 e− 2 e− Fe Fe2+

  3. Chemical Formulas • Fe2+ + 2 H2O ⇌ Fe(OH)2 + 2 H+ Fe2+ 2 H2O Fe(OH)2 Rust 2 H+ Notice there are no electrons on the atom

  4. Chemical Formulas • 2 FeO(OH) ⇌ Fe2O3 + H2O Fe2O3 Another form of rust FeO(OH) Rust H2O

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