Question

How the iron rust?
plz explain with it's full prosses​

Answer 1

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

Iron occurs naturally in two different forms: Iron (II) and Iron (III).

Scientific Name of Oxide of Iron (II) is Ferrous Oxide (FeO).

Scientific Name of Oxide of Iron (III) is Ferric Oxide (Fe2O3).

Answer 2

$\huge\red{Heya!!}$

Rust is usually used to refer to a very common, reddish-brown compound called iron oxide (Fe2O3). Iron oxide is formed when iron and oxygen react in the presence of water or moisture in the air.

Iron oxide is very common, because iron reacts easily with oxygen in the air. In fact, it reacts so readily with oxygen that it's actually very rare to find pure iron in nature.

Rust can also refer to the reaction of iron and chloride in an underwater environment. This can sometimes be seen on rebar used in underwater pillars. Over time, green rust will appear on these pillars as the iron reacts with chloride in the water.

Rust occurs when iron or its alloys, such as steel, corrode. The surface of a piece of iron will begin to corrode first in the presence of oxygen and water. Given enough time, any piece of iron will change entirely into rust and disintegrate.