1. Half Reactions

2. Half Reactions
Show the exchange of electrons during a single replacement reaction.

3. How to determine half reactions
Write a balance chemical equation.
Determine the solubility of the reaction.
Break all aqueous compounds into ions.
Cancel out spectator ions.
Rewrite the equation (NIE).
Write two ½ reactions, one for each element remaining.
Balance the ½ reactions by adding electrons (e-)
Determine oxidation and reduction, remember OIL RIG or LEO says GER

4. Practice Calcium + aluminum nitrate → Sodium + iron III chloride →
Sodium bromide + chlorine →