Solubility Rules

Question 1

All compounds containing (1)___________ cations and the (2)________ ion are soluble

Answer 1

(1) alkali metal

2) ammonium(NH4^+

Question 2

All compounds containing (1), (2), (3), and (4) anions are soluble.

Answer 2

(1) N O3-(Nitrate)
(2) Cl O4-(Perchlorate)
(3) Cl O3-(Chlorate)
(4) C2 H3 O2-(Acetate)

Question 3

All chlorides, bromides, and iodides are soluble except those containing (1), (2), or (3).

Answer 3

(1) Ag+(Silver)
(2) Pb^2+(Lead(II) or plumbous)
(3) Hg^2+(Mercury (II) or mercuric)

Question 4

All sulfates are soluble except those containing 1,2,3,4,5.

Answer 4

1. Hg^2+(Mercury (II) or mercuric)
2. Pb^2+(Lead(II) or plumbous)
3. Sr^2+(Strontium)
4. Ca^2+(Calcium)
5. Ba^2+(Barium)

Question 5

All hydroxides are insoluble except compounds of 1,2,3,4

Answer 5

1. Alkali metals
2. Ca^2+(Calcium)
3. Sr^2+(Strontium)
4. Ba^2+(Barium)

Question 6

All compounds containing 1,2,3,4 ions are insoluble except those that also contain 5 or 6.

Answer 6

1. PO4^3-(Phosphate)
2. S^2-(Sulfur)
3. CO3^2-(Carbonate)
4. SO3^2-(Sulfite)
5. alkali metals
6. NH4^+(Ammonium)