Redox reaction

Redox reaction

Oxidation

Reduction

Redox reaction

Oxidation State

OIL RIG

Oxidation Is the Loss of electrons

Reduction Is the Gain of electrons

Concept of Redox reaction

Oxidation : Increase in an oxidation state of an atom/ion

Reduction : Decrease in an oxidation state of an atom/ion

Example I

Zn (s) + Cu²⁺ (aq) → Zn²⁺ (aq) + Cu (s)

Zn (s) → Zn²⁺ (aq) : Oxidation process

Cu²⁺ (aq) → Cu (s) : Reduction process

Example I

Zn (s) + Cu²⁺ (aq) → Zn²⁺ (aq) + Cu (s)

Zn (s) → Zn²⁺ (aq) : Oxidation number increasing

Cu²⁺ (aq) → Cu (s) : Oxidation number decreasing

Homework II

What is oxidising agent?

What is reducing agent?