Question

What happens during oxidation and reduction ?

Answer 1

1. Oxidation is the loss of electrons and increase of oxidation state takes place.
2. Addition of Oxygen and removal of Hydrogen takes place in oxidation.
3. Example: $\mathrm{Na}\to {\mathrm{Na}}^{+}+{\mathrm{e}}^{-}$
4. Reduction is the gain of electrons with the decrease in oxidation state of atoms/ions.
5. Removal of Oxygen and addition of Hydrogen takes place in reduction.
6. Example: $\mathrm{Cl}+{\mathrm{e}}^{-}\to {\mathrm{Cl}}^{-}$