1
Oxidant and reductant
The oxidant gains electrons and is reduced. The reductant loses electrons and is oxidised. Mnemonic: OIL RIG — Oxidation Is Loss, Reduction Is Gain.
High school15 min
Balancing a redox half-equation
The five-step method, in the order that actually works, and how to combine two half-equations without leaving electrons behind.
The essentials
2
Writing a couple
Members only
3
What must be conserved
Members only
4
Reference half-equation
Members only