Question

What is rusting? How can it be prevented? Also write chemical equation ​

Answer 1

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Rusting of Iron:

While playing in your building compound, you might have come across an iron barbed wire which has turned red. You might have also seen some old metallic object at home. You would realise that these objects have turned reddish, unlike their original metallic colour. This is what we call rusting of iron.

Chemical Reaction of Rusting is as follows:

Iron + Oxygen (from environment) + Water (Humidity) —> Iron Oxide (Rust)

Fe + O2 + H2O —> FeO and Fe2O3

Methods used to prevent Rusting of Iron are as follows:

• Alloying – Since Rusting of Iron is a chemical process that happens because the metal is attaining more stable chemical state, alloying (mixing) the iron with other stable metals or alloys can slow down the process of rusting.
• Galvanizing – Galvanizing a metal object means to coat the surface of that object with a layer of metallic zinc. Also, it is an inexpensive procedure. In conclusion, it will provide it with protection against rusting.
• Coating and Painting – Coating the surface of a metal object with a layer of either Paint or Varnish will break the contact between the surface and atmospheric oxygen making it consequently immune to rusting.
• Humidity Control – Controlling the humidity of the environment is also a solution. Therefore, the chances of the metal object rusting will reduce.

Answer 2

Answer:

This might help you

Explanation:

to prevent rusting:

painting iron Gates

oil coating on tools and machines

galvanization

etc...

Chemical equation :-

Fe+O2+H2O = Fe2O3. H2O

(Iron) (Rust)