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Question
Define precipitation.
Solution
Precipitation: A chemical reaction in which two compounds in their aqueous state react to form an insoluble salt as one of the product.
Acid + Base → Salt + Water
Example.
\[\ce{\underset{\text{Barium chloride}}{BaCl2 (aq)} + \underset{\text{Sodium sulphate}}{Na2SO4 (aq)} -> \underset{\text{Barium sulphate white ppt}}{BaSO4^-}+ \underset{\text{sodium chloride}}{2NaCl (aq)}}\]
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