You have been studying the solubility rules in science. Today in chemistry lab you must select a ionic compound that will NOT dissolve in water at room temperature. Which compound listed here would be a good choice?
A) CaCrO4
B) Ca(OH)2
C) MgS
D) ZnCl2

You have been given four ionic compounds to add to distilled water. You set up four test tubes containing 25 ml of water at room temperature. To each test tube you add 5 grams of the compounds listed below. Which compound WILL dissolve in water?

A) Na2CrO4

B) PbSO4

C) CuBr

D) AlPO4