Oxidation:
According to the classical concept, oxidation is a process of addition of oxygen or removal of hydrogen.
Removal of hydrogen
2H2S + O2 → H2O + 2S
Addition of oxygen C + O2 → CO2
According to the electronic concept, loss of electrons is called oxidation reaction.
Ca → Ca2+ + 2e-
During oxidation, oxidation number increases.
Dining oxidation, reducing agent gets oxidised.
Reduction:
Reduction is a process of removal of oxygen or addition of hydrogen. Addition of hydrogen
Ca + H2 → CaH2
Removal of oxygen
Zn O + C → Zn + CO
According to the electronic concept, gain of electrons is called reduction reaction.
Zn2+ + 2e- → Zn
During reduction, oxidation number decreases.
During reduction, oxidising agent gets reduced.
