solubility rules for ionic compounds in water

Question 1

All common compounds of Group 1A(1) ions (Li⁺, Na⁺, K⁺, etc.)

Answer 1

soluble ionic compounds. no insoluble exceptions

Question 2

All common compounds of ammonium ion (NH₄⁺)

Answer 2

soluble ionic compounds. no insoluble exceptions

Question 3

All common nitrates (NO₃¯), acetates (CH₃COO¯ or C₂H₃O₂¯), and perchlorates (ClO₄¯)

Answer 3

soluble ionic compounds. no insoluble exceptions

Question 4

All common chlorides (Cl¯), bromides (Br¯), and iodides (I¯)

Answer 4

soluble ionic compounds. insoluble exceptions: chlorides, bromides, and iodides of Ag⁺, Pb²⁺, Cu⁺, and Hg₂²⁺

Question 5

All common fluorides (F¯)

Answer 5

soluble ionic compounds. insoluble exceptions: PbF₂ and fluorides of Group 2A(2)

Question 6

All common sulfates (SO₄²¯)

Answer 6

soluble ionic compounds. insoluble exceptions: CaSO₄, SrSO₄, BaSO₄, Ag₂SO₄, PbSO₄

Question 7

All common metal hydroxides

Answer 7

insoluble ionic compounds. soluble exceptions: Group 1A(1) hydroxides and Ca(OH₂), Sr(OH)₂, and Ba(OH)₂

Question 8

All common carbonates (CO₃²¯) and phosphates (PO₄³¯)

Answer 8

insoluble ionic compounds. soluble exceptions: carbonates and phosphates of Group 1A(1) and NH₄⁺

Question 9

All common sulfides

Answer 9

insoluble ionic compounds. soluble exceptions: sulfides of Group 1A(1), Group 2A(2), and NH₄⁺