IONIC and NET IONIC EQUATIONS

• Net ionic – an equation representing what

happens to the ions in a reaction

- shows what is really taking place in a reaction

• Aqueous substances

–soluble in H2O

–Use solubility table

–Write in ion form

• Steps for writing net ionic eqns:– 1. Write molecular eqn, (Don’t balance)– 2. Write ionic eqn – use solubility table– 3. Write net ionic eqn – cancel spectator ions

Spectator ion – an ion that does not change from reactant side to product side

• Example #1 – Sodium chloride reacts with lead (II) nitrate to form sodium nitrate and lead (II) chloride

• 1 – Molecular eqn

• 2 – Ionic

• 3 – Net ionic eqn

• Example #2 – Solutions of barium bromide and sodium sulfate react together. Predict the products, write the net ionic eqn.

• 1 – Molecular eqn

• 2 – Ionic

• 3 – Net ionic eqn

• IMPORTANT:

Compounds that are _________ according to the _________ can ________ into _____ ONLY if __________ is present.

• Example #3 – Sodium chlorate decomposes.

• 1 – Molecular eqn

• 2 – Ionic

• 3 – Net ionic eqn

• Example #4 – Methane gas (CH4) is burned in air.

• 1 – Molecular eqn

• 2 – Ionic

• 3 – Net ionic eqn