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kvv77 [185]
4 years ago
14

Why do some combinations of ionic compounds form a precipitate while others do not

Chemistry
2 answers:
olasank [31]4 years ago
5 0

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:

PdSO_{(aq)} + K_{2}S_{(aq)}   = PdS_{(s)} +K_{2}SO_{4}_{(aq)}

Both reactants are acqeous and the product is solid.

Marizza181 [45]4 years ago
4 0

Whether or not such a reaction occurs can be determined by using the solubility rules for common ionic solids.

tell me if i'm wrong

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