Advanced Double Replacement

A double replacement is a reaction between two ionic compounds usually in solution.
Today we are going to look further in double replacement.

How can we determine if a double replacement reaction actually occurs?  If the reactants change state during the reaction, there is a reaction occuring, usually a precipitate forming.  However, if there is no change of state, then there is no reaction.

We can use the Table of Solubility to determine the states - aqueous (aq) or solid (s).

There is a NET reaction when you have a precipitation that occurs.  The aqueous ions that are the same on both sides get cancelled.