Rusting of iron is catalysed by
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Rusting is the oxide layer formed on the surface of a metal. For example, rusted iron rods. The amount of hydrogen gas that escapes from the surface of iron determines the rate of rusting.
- Fe
- $O_2$
- Zn
- $H^+$
The Correct Option is D
Solution and Explanation
Rusting of iron is catalyzed by \(H^+\) ions.
Rusting is the formation of rust or iron oxides on the surface of an object. Rust forms due to the reaction between oxygen and water (present as moisture). This is a redox reaction.
Rust is an iron oxide. These oxides are a hydrated iron (III) oxide having the general formula as Fe2O3 .nH2O . This is because iron is known to exhibit two different valencies of +2 and +3. Thus the iron oxides are either ferrous oxide or ferric oxide. Rusting is catalyzed by the presence of H+ ions (acidic medium). The reaction is given by:
- \(Fe \longrightarrow Fe^{2+}+2 e^{-}\)
- \(2 H^{+}+2 e^{-} \longrightarrow H_{2}\)
Also Read: Types of Redox Reactions
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