Question

Why does iron surface get covered with a powdery brown matrial when kept in moist atmosphere?

Answer 1

When iron is kept in moist atmosphere, it reacts with the moisture (water)

and air (oxygen) to form a powdery brown material called RUST.


The powdery brown material is rust. Chemically, it is called hydrated iron (III) oxide.

The formation of rust requires iron, oxygen and water. In the absence of

either water or oxygen, no rusting can take place. That explains why the

processes involved in preventing rusting tries to eliminate water or oxygen or

 both.

Answer 2

Answer:

Explanation:

When iron is kept in moist atmosphere, it reacts with the moisture (water)

and air (oxygen) to form a powdery brown material called RUST.

The powdery brown material is rust. Chemically, it is called hydrated iron (III) oxide.

The formation of rust requires iron, oxygen and water. In the absence of

either water or oxygen, no rusting can take place. That explains why the

processes involved in preventing rusting tries to eliminate water or oxygen