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When iron is rusted, it is...

When iron is rusted, it is

A

Oxidised

B

Reduced

C

Evaporated

D

Decomposed

Text Solution

Verified by Experts

The correct Answer is:
A
`Fe(s)rarrFe^(2+)+2e^(-)` (Oxidation)
`O_(2)+4H^(o+)4e^(-)rarr2H_(2)O` (Reduction)
Atmospheric oxidation:
`2Fe^(2+)+2H_(2)O+(1)/(2)O_(2)rarrFe_(2)O_(3)+4H^(o+)`
Rust is `Fe_(2)O_(3)xH_(2)O`
Correosion or rusting occurs in the presence of water and air.
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