# What type of reaction can produce insoluble salts?

Jun 21, 2015

Insoluble salts can be produced by precipitation reactions, in which two aqueous solutions react to produce a precipitate (an insoluble salt).

#### Explanation:

Examples:

$\text{NaCl(aq)"+"AgNO"_3"(aq)}$$\rightarrow$$\text{AgCl(s)"+"NaNO"_3("aq")}$

$\text{2KOH(aq)"+"MgSO"_4"(aq)}$$\rightarrow$$\text{Mg(OH)"_2("s")"+K"_2"SO"_4"(aq)}$

You can determine which compounds are insoluble by using a chart of solubility rules, such as the one below.