Question

why are source of the displacement reaction called perciptation

Answer 1

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☜☆☞ Because for precipitaion to occur, two soluble salts exchange their ions, therefore both displace each other,to form the insoluble salt and another soluble one.

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Answer 2

It is bcoz reactants react to form products that have a different chemical formula.We can take a similar example such as :

An example is the reaction between iron and copper sulfate to produce iron sulfate and copper

Fe + CuSO4 → FeSO4 + Cu
Here, both iron and copper have the same valence. One metal cation takes the place of the other bonding to the sulfate anion.