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Writing Equations for Precipitation Reactions
4. If all of the potentially insoluble products are soluble, there will be no precipitate. Write NO REACTION next to the arrow.
5. One of the potentially insoluble products is insoluble, so write its formula as the product of the reaction, using (s) to indicate solid. Write the soluble product with (aq) to indicate aqueous.
Na2CO3(aq) + CuCl2(aq) → CuCO3(s) + NaCl(aq)