Question

What type of reaction can produce insoluble salts?

Answer 1

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

Explanation:

Examples:

`"NaCl(aq)"+"AgNO"_3"(aq)"` `rarr` `"AgCl(s)"+"NaNO"_3("aq")"`

`"2KOH(aq)"+"MgSO"_4"(aq)"` `rarr` `"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.