Solubility Rules

Question 1

Group 1 Ions

Answer 1

Soluble, No Exceptions

Question 2

Ammonium (NH4+)

Answer 2

Soluble, No Exceptions

Question 3

Nitrate (NO3-)

Answer 3

Soluble, No Exceptions

Question 4

Acetate (C2H3O2-)

Answer 4

Soluble, No Exceptions

Question 5

Hydrogen Carbonate (HCO3-)

Answer 5

Soluble, No Exceptions

Question 6

Chlorate (ClO3-)

Answer 6

Soluble, No Exceptions

Question 7

Halides (Cl-, Br-, I-, etc.)

Answer 7

Soluble
Exceptions: when combined with Ag+, Pb+2, or Hg2+2

Question 8

Sulfates (SO4-2)

Answer 8

Soluble
Exceptions: when combined with Ag+, Ca+2, Sr+2, Ba+2, or Pb+2

Question 9

Carbonate (CO3-2)

Answer 9

Insoluble
Exceptions: When combined with Group 1 ions or ammonium

Question 10

Chromate (CrO4-2)

Answer 10

Insoluble
Exceptions: when combined with Group 1 ions, Ca+2, Mg+2, or ammonium

Question 11

Phosphate (PO4-3)

Answer 11

Insoluble
Exceptions: When combined with Group 1 ions or ammonium

Question 12

Sulfides (S-2)

Answer 12

Insoluble
Exceptions: When combined with Group 1 ions or ammonium

Question 13

Hydroxide (OH-)

Answer 13

Insoluble
Exceptions: when combined with Group 1 ions, Ca+2, Ba+2, Sr+2, or ammonium

Question 14

Perchlorate (ClO4-)

Answer 14

Soluble, no exceptions