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what is precipitation?
Precipitation is the formation of a solid in a solution. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. The chemical that causes the solid to form is called the 'precipitant'.
Examples;
 If silver nitrate solution is poured into a solution of sodium chloride, a chemical reaction occurs forming a white precipitate of silver chloride.
 When potassium iodide solution reacts with lead nitrate solution, a yellow precipitate of lead iodide is formed.


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