Question

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Explain the phenomenon of rusting in iron.
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Answer 1

Consequences in daily life

Rusting happens on the surface of iron objects making it coarse and flaky. It also makes the iron objects fragile. Rusting happens quicker in a humid environment. As a result, it is easier for water tanks and pipes to get rusted. Therefore, various methods are used to reduce the effect of rusting. Getting wounded from a corroded metal object especially rusted iron objects can prove to be dangerous.

Chemistry of Rusting of Iron

Corrosion of any metal is a natural process. It results in the conversion of the metal into its chemically stable form that can be either oxides or hydroxides or sulphides.
Rusting is a type of Chemical Change. It results in the formation of Iron Oxide which is an entirely new substance. Chemical Reaction of Rusting is as follows:


Iron + Oxygen (from environment) + Water (Humidity) —> Iron Oxide (Rust)
Fe + O2 + H2O —> FeO and Fe2O3

Answer 2

Rusting In Iron:-

When iron comes in contact with any humid air, water and many corrosive substances it will become corroded. This phenomena is called rusting.

During rusting of iron, its outer surface is destroyed and becomes like powdery.