Sample Study Sheet: Predicting Precipitation Reactions and Writing Precipitation Equations
Tip-off When you are asked to predict whether a precipitation reaction takes place when two aqueous solutions of ionic compounds are mixed and to write complete and net ionic equations for the reaction, if it takes place, you can follow these steps.
Step #1: Determine the formulas for the possible products using the general double displacement equation. (Remember to consider ion charges when writing your formulas.)
Predict whether either of the possible
products is water insoluble. If either possible product is insoluble, a
precipitation reaction takes place, and you will continue with step #3. If
neither is insoluble, write No reaction.
Step #3: Follow these steps to write the complete equation.
Follow these steps to write the net ionic