Ch 7: Solubility Rules

Question 1

Carbonates

Answer 1

Insoluble unless paired with Group 1A or ammonium.

Question 2

Sulfates

Answer 2

Soluble unless paired with Group 2A or Lead.

Ca2+, Sr2+, Ba2+, Pb2+

Question 3

Phosphates

Answer 3

Insoluble unless paired with Group 1A or ammonium.

Question 4

Lead, silver, Mercury

Answer 4

Insoluble unless paired with nitrates or acetates.

Question 5

Halides

Answer 5

Halide = Group 7A (Halogen ions)

Soluble unless paired with Silver, Lead, or Mercury

(Ag+, Pb2+, Hg2 2+)

Question 6

Insoluble unless paired with Group 2A (Ca2+, Sr2+, Ba2+)

Answer 6

Hydroxides, sulfides

Question 7

Bromides

Answer 7

Soluble unless paired with Silver, Mercury, Lead.

Ag+, Hg2 2+, Pb2+

Question 8

group 1A, ammonium, nitrates, acetates

Answer 8

Always soluble

Question 9

Soluble unless paired with Group 2A, Lead

Answer 9

Sulfates

Question 10

Insoluble unless paired with Group 1A or ammonium ONLY.

Answer 10

Carbonates and phosphates.

Question 11

Iodides

Answer 11

Soluble unless paired with Silver, Mercury, Lead.

Ag+, Hg2 2+, Pb2+

Question 12

Hydroxides

Answer 12

Insoluble unless paired with Group 1A, ammonium, or group 2A

Li+, Na+, K+, NH4+
(Ca2+, Sr2+, Ba2+)

Question 13

Soluble unless paired with Silver, Mercury, or Lead.

Answer 13

Halides

Cl-, Br-, I-

Question 14

Always soluble

Answer 14

Group 1A, ammonium, Nitrates, Acetates

Li+, Na+, K+, NH4+, NO3-, C2H3O2-

Question 15

Insoluble unless paired with Group 1A or ammonium.

Answer 15

All the mostly insoluble, nonmetal ions are made soluble by Group 1A and ammonium.

Hydroxides, sulfides, carbonates, phosphates

Question 16

Sulfides

Answer 16

Insoluble unless paired with Group 1A, ammonium, or Group 2A.

(Li+, Na+, K+, NH4+)
(Ca2+, Sr2+, Ba2+)

Question 17

Chlorides

Answer 17

Soluble unless paired with Silver, Lead, Mercury.

Ag+, Hg2 2+, Pb2+