Separate this redox reaction into its component half-reactions. 3o2 4co

The equation is:

3 O₂ + 4 Co → 2 Co₂O₃

Oxidation half reaction:

Co → Co³⁺ + 3 e

Reduction half reaction:

O₂ + 4 e → 2 O²⁻

To balance the equation number of electrons lost must be equal to number or electrons gained so we must multiply oxidation half time 4 and reduction half times 3