Half Reactions.

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Presentation transcript:

Half Reactions

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

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

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

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