Preparation of insoluble salts
Insoluble salts are made by precipitation reactions.
A precipitate is an insoluble solid that is made by a chemical reaction that takes place in a aqueous solution.
A precipitation reaction is a reaction that produces a precipitate.
To make an insoluble salt, it is necessary to mix together two separate aqueous solutions. One solution must contain the required positive ion and the other solution the required negative ion.
The precipitate is then removed by filtration, washed with a little distilled water and left to dry in a warm place.
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