Question

deffination of oxidation reaction

Answer 1

The reaction in which there is....
Addition of Oxygen to an element or compound
addition of electronegative element or
removal of Hydrogen or
removal of electropositive element from a substance ......is called as Oxidation reaction

Answer 2

In the corrosion of Iron metals, Iron metals reacts with water and oxygen and forms hydrated oxide called Rust.

Addition of oxygen or removal of hydrogen is called a oxidation Reaction. It takes place only in the presence of Oxygen, water and moisture.

When a Substance, Gains oxygen or losses Hydrogen During a chemical reaction , It is oxidised.

4Fe + 3O2 + 2xH2O –» 2Fe2O3. xH2O

Since , Iron metal combines with water and Oxygen to corrode.

When Oxidation Occurs, a thin, porous, coating of reddish brown or yellow covers the metal.

It can be prevented by :-

» By Painting
» By Electroplating
» By Galvanising
» By Anodizing.

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BEST OF LUCK ;-)

#akashmandal.