Ionic Compound Solubility Guidelines

Question 1

soluble ionic compounds?

Answer 1

Nitrates (NO₃⁻)
Acetates (CH₃COO⁻ or C₂H₃O₂⁻)
Chlorides (Cl⁻)
Bromides (Br⁻)
Iodides (I⁻)
Sulfates (SO₄²⁻)

Question 2

insoluble ionic compounds

Answer 2

Sulfides (S²⁻)
Carbonates (CO₃²⁻)
Phosphates (PO₄³⁻)
Hydroxides (OH⁻)

Question 3

Nitrates (NO₃⁻)

Answer 3

Charge: -1
Rule: All nitrates are soluble.

Question 4

Acetates (CH₃COO⁻ or C₂H₃O₂⁻)

Answer 4

Charge: -1
Rule: All acetates are soluble.

Question 5

Chlorides (Cl⁻)

Answer 5

Charge: -1, Soluble
Exceptions: Insoluble with Ag⁺, Pb²⁺, and Hg₂²⁺.

Question 6

Bromides (Br⁻)

Answer 6

Charge: -1, Soluble
Exceptions: Insoluble with Ag⁺, Pb²⁺, and Hg₂²⁺.

Question 7

Iodides (I⁻)

Answer 7

Charge: -1, Soluble
Exceptions: Insoluble with Ag⁺, Pb²⁺, and Hg₂²⁺.

Question 8

Sulfates (SO₄²⁻)

Answer 8

Charge: -2, Soluble
Exceptions: Insoluble with Ba²⁺, Sr²⁺, Pb²⁺, , and Hg₂²⁺

Question 9

Sulfides (S²⁻)

Answer 9

Charge: -2

Rule: Insoluble except with Ca²⁺, Sr²⁺, and Ba alkali metals (Li⁺, Na⁺, K⁺,Rb, Cs) and NH4

Question 10

Carbonates (CO₃²⁻)

Answer 10

Charge: -2
Rule: Insoluble except with alkali metals and NH₄⁺.

Question 11

Phosphates (PO₄³⁻)

Answer 11

Charge: -3
Rule: Insoluble except with alkali metals and NH₄⁺.

Question 12

Hydroxides (OH⁻)

Answer 12

Charge: -1
Rule: Generally insoluble except with alkali metals, Ba²⁺, Sr²⁺, Ca²⁺ and NH₄⁺.