Question

example of oxidation and reduction

Answer 1

Oxidation:
Oxidation has been classically defined as the combination of oxygen or any other electronegative element with another element or compound or as the removal of hydrogen or any other electro-positive element from chemical compound.



Example:
1. Addition of Oxygen:
(a) When carbon burns in oxygen to produce carbon dioxide. Here oxygen is added with carbon to produce Carbon dioxide and carbon is considered to have been oxidised.

C + O₂ ⇆ CO₂



(b) The magnesium metal reacts with chlorine to produce magnesium chloride. In this reaction magnesium is considered to have been oxidised.
Mg + O₂ ⇆ MgO
(c) When Ferrous Oxide heated in oxygen to produce Ferric Oxide. Here Ferrous oxide is considered to have oxidised. 
4FeO + O₂ ⇆ 2Fe₂O₃

Reduction has been classically defined as the combination of hydrogen or any other electro-positive element with another element or compound or as the removal of oxygen or any other electronegative element from chemical compound.

Process of Reduction1. Addition of Hydrogen:
(a) Bromine can reacts with hydrogen to produce HBr.
Reduction of Bromine

In the above reaction Bromine can combination with hydrogen to produce hydrogen bromide. Thus bromine can reduced.

(b)Hydrogen Sulphide reacts with chlorine to produce Hydrogen chloride and Sulphur.

Oxidation Reduction Reaction

In the above reaction chlorine can combine with hydrogen. Thus chlorine can reduced.

2. Addition of electro-positive elements:

2K₃[Fe(CN)₆] + 2KOH +H₂O₂ = 2K₄[Fe(CN)₆]+ 2H₂O + O₂