Question

Define rusting of iron

Answer 1

Rusting:

• When iron is left exposed to moist air, it undergoes a chemical change leading to the formation of a brown powdered mass on the iron, leading to the occurrence of a phenomenon known as rusting.
• Rusting Takes place only in moist air when there is intimate contact between water, oxygen, and iron.
• The process of rusting can be represented by the following equation

$\underset{\mathrm{Iron}}{\mathrm{Fe}\left(\mathrm{s}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\stackrel{}{\to }\underset{\mathrm{Rust}}{{\mathrm{Fe}}_2{\mathrm{O}}_3.{\mathrm{xH}}_2\mathrm{O}\left(\mathrm{s}\right)}$