1. CLASSICAL IDEA OF REDOX REACTIONS

CHAPTER - 8 REDOX REACTIONS

CLASSICAL IDEA OF REDOX REACTIONS – OXIDATION AND REDUCTION REACTIONS

• Oxidation
Oxidation is defined as the addition of oxygen/electronegative element to a substance or rememoval of hydrogen/ electropositive element from a susbtance.
For example,

2Mg_(s) + O_2(g) → 2MgO_(s)

Mg_(s) + Cl_2(g) → 2MgCl₂

• Reduction
Reduction is defined as the memoval of oxygen/electronegative element from a substance or addition of hydrogen or electropositive element to a substance.
For example,

2FeCl_3(aq) + H_2(g) → 2FeCl_2(aq) + 2HCl_(aq)

2HgO_(s) → H_2(g) → 2Hg_(l) + O_2(g)