Solubility Rules

Card 1
Q: All compounds of Group 1A (alkali metals) and NH₄⁺ are...?
A: Soluble, with no exceptions.

Card 2
Q: All nitrates (NO₃⁻), acetates (C₂H₃O₂⁻), and perchlorates (ClO₄⁻) are...?
A: Soluble, with no exceptions.

Card 3
Q: All chlorides (Cl⁻), bromides (Br⁻), and iodides (I⁻) are...?
A: Soluble, except with Ag⁺, Pb²⁺, and Hg₂²⁺.

Card 4
Q: All sulfates (SO₄²⁻) are...?
A: Soluble, except with Ba²⁺, Sr²⁺, Pb²⁺, Ca²⁺, and Hg₂²⁺.

Card 5
Q: All carbonates (CO₃²⁻), phosphates (PO₄³⁻), and sulfites (SO₃²⁻) are...?
A: Insoluble, except with Group 1A and NH₄⁺.

Card 6
Q: All hydroxides (OH⁻) are...?
A: Insoluble, except with Group 1A, NH₄⁺, Ca²⁺, Sr²⁺, and Ba²⁺ (slightly soluble).

Card 7
Q: All sulfides (S²⁻) are...?
A: Insoluble, except with Group 1A, Group 2A, and NH₄⁺.