Solution: Of those below, which is most soluble in water?A. Ca3(PO4)2 B. AgCl C. Na2S D. PbI2 E. CuS

Use the concept of solubility rules to determine which of the compounds is the most soluble in water

Solubility Rules:

•Soluble Ionic Compounds:

▪Group 1A ions (Li⁺, Na⁺, K⁺, etc.) and Ammoniumion (NH₄⁺) are soluble
 ▪ Nitrates (NO₃^-), Acetates (CH₃COO^- or C₂H₃O₂^-), and most Perchlorates (ClO₄^-) are soluble
 ▪ Cl^-, Br^-, and I^- are soluble except when paired with Ag⁺, Pb²⁺, Cu⁺, Hg₂²⁺
 ▪ Sulfates (SO₄^2-) are soluble except those of Ca²⁺, Sr²⁺, Ba²⁺, Ag⁺, and Pb²⁺