![]() Nature also makes some cool precipitate structures. For those tests, a series of compounds can be added to deduce what ions are present. Additionally, these tests are also commonly used in chemistry labs. The lead would precipitate out as either PbCl 2 or Pb(OH) 2 and indicate that lead is present. For example, to determine if lead (Pb 2+) is present in the solution, a solution containing chlorides or hydroxides could be added. Precipitation reactions are commonly used to identify if certain ions are present in a solution. To learn how to name these compounds, read the Naming Ionic Compounds tutorial! Uses of Precipitation Reactions and Real-Life Examples Carbonates, chromates, phosphates, and fluorides are all insoluble except for with alkali metals and ammonium.Ī full solubility chart and description of what compounds are soluble can be found on the Solubility Rules tutorial.Sulfides are insoluble except with the alkali and alkaline earth metals.Hydroxides are slightly soluble with the alkaline earth metals. Hydroxides are insoluble except for with alkali metals. ![]()
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