What type of reaction can produce insoluble salts?

1 Answer
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:

"NaCl(aq)"+"AgNO"_3"(aq)"NaCl(aq)+AgNO3(aq)rarr"AgCl(s)"+"NaNO"_3("aq")"AgCl(s)+NaNO3(aq)

"2KOH(aq)"+"MgSO"_4"(aq)"2KOH(aq)+MgSO4(aq)rarr"Mg(OH)"_2("s")"+K"_2"SO"_4"(aq)"Mg(OH)2(s)+K2SO4(aq)

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

![http://sayrechem.weebly.com/http://solubility-rules.html](https://useruploads.socratic.org/WVV6rbjSS9iPwzODx5B6_229984390.gif)