Question

what is rusting ? Explain it.​

Answer 1

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When iron is exposed to moist air, it is found covered. The with a reddish-brown coating which can easily be detached.The reddish brown coating is called 'rust'. Thus, the corrosion of iron or formation of the rust is called rusting.

The composition of the rust is not certain but it mainly contains hydrated ferric oxide, 2Fe,O 3HO, together with a small quantity of ferrous carbonate. The rust is formed by the action of water on iron in presence of dissolved oxygen and carbon dioxide. It has been observed that impure iron is more prone to rusting.

Condition of rusting :-

(i) Presence of moisture

(ii) Presence of a weakly acidic atmosphere

(iii) Presence of impurity in the iron.

Answer 2

Rusting is occurs in iron material, it is a oxidation reaction.

Step-by-step explanation:

• When the iron is react with water and oxygen the hydrated iron is formed.
• The hydrated iron is see as rust.
• Over a period of time the iron is contact with water and oxygen present in the air the rusting will occur.
• Rusting is the oxidation reaction, so rust is the iron oxide, it is reddish brown color.
• Water or air moisture is the catalytic agent of rusting.
• In the presence of air and water the rusting will occur in bare metal (iron) surface.

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