Precipitation Reactions
Home Up Precipitation Reactions Acid-Base Reactions Identification of Compounds

 

Predicting Precipitation Reactions
Equations for Precipitation Reactions

Precipitation Reactions

A precipitation reaction is a reaction in which soluble ions in separate solutions are mixed together to form an insoluble compound that settles out of solution as a solid. That insoluble compound is called a precipitate.

Solubility Rules for Ionic Compounds

Solubility rules are useful summaries of information about which ionic compounds (or combinations of ions) are soluble in water and which are not. They are also important tools for making predictions about whether certain ions will react with one another to form a precipitate. In addition, they are useful for figuring out what ions might be involved when a precipitation reaction has been observed.

You will be responsible for being able to use the solubility rules to achieve the tasks listed above, although you will not be responsible for memorizing the solubility rules.

In this section you will use solubility rules to predict precipitation reactions and then write equations to represent them.

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Clackamas Community College E-mail instructor: Eden Francis
Science Department
19600 South Molalla Avenue
Oregon City, OR 97045
(503) 594-3352
FAX (503)-650-6657

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