Double Replacement Reactions

A reaction that takes place when two Aqueous Ionic Compounds switch cations and result in an Aqueous Ionic Compound and a Solid. However, not all occurrences of the switch are reactions, some will not produce solids and both compounds remain aqueous. You can tell if there is a solid formed using the solubility rules:

If no solid is formed, you're done, finished, no reaction, but if there is you must also balance the reaction equation. Then you must disassociate the equations, or break apart the chemical compounds into their respective ions to get the Complete Ionic Equation. After this you cancel chemicals that are on both side resulting in the Net Ionic Equation.

If you want to see how its done, go HERE.