 Custom Search Precipitation ReactionsWhen 2 reactants are mixed, an insoluble compound may form. This insoluble solid compound is called a precipitate. The production of a precipitate is considered a reaction. How do we determine if a reaction occurs?
1. Write names of products by switching last names 2. Check solubility on table F. soluble --> (aq) insoluble--> (s)= precipitate = means a reaction occurs 2 soluble products = no reaction=STOP
***Note...If Both products are soluble and all ions remain independent in solution; no reaction occurs like in this example: Na+(aq) + Cl-(aq) + K+(aq) + NO3-(aq) Names Examples 1. Write names of products by switching last names 2. Check solubility on table F. (insoluble= solid, soluble=aqueous) A. silver nitrate (aq)+ potassium chromate(aq) è potassium nitrate(aq) + silver chromate(s) B. sodium sulfate(aq) + barium chloride(aq)è barium sulfate(s) + sodium chloride(aq) C. lithium hydroxide(aq) + sodium chromate(aq)è sodium hydroxide(aq) + lithium chromate(aq) C has no reaction, both products are soluble
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