Answer:
This is because of the solubility of the reacting metal salts.
Explanation:
The use of solubility of salts influences the formation of precipitates. Most precipitation reactions occur as a result of the replacement reactions or double placement reactions. A double replacement reaction occurs when two ionic reactants dissociate and bond with respective anion and cation of the other reactant. This is simply a switch over reaction.
A double replacement reaction occurs when a chemical reaction occurs and one of the products formed is insoluble.
Here is an example:
[tex]PdSO_{(aq)} + K_{2}S_{(aq)} = PdS_{(s)} +K_{2}SO_{4}_{(aq)}[/tex]
Both reactants are acqeous and the product is solid.
