Polyatomic Ions and Solubility Rules

Flashcards covering polyatomic ions and solubility rules for AP Chemistry.

Ammonium

NH4+

Carbonate

CO3²⁻

Chromate

CrO4²⁻

Dichromate

Cr₂O₇²⁻

Amide

NH₂⁻

Oxalate

C₂O₄²⁻

Peroxide

O₂²⁻

Silicate

SiO₃²⁻

Sulfate

SO₄²⁻

Sulfite

SO₃²⁻

Bromate

BrO₃⁻

Formate

HCO₂⁻

Acetate

C₂H₃O₂⁻

Perchlorate

ClO₄⁻

Chlorate

ClO₃⁻

Chlorite

ClO₂⁻

Hypochlorite

ClO⁻

Cyanide

CN⁻

Hydrogen Carbonate (Bicarbonate)

HCO₃⁻

Hydroxide

OH⁻

Iodate

IO₃⁻

Nitrate

NO₃⁻

Nitrite

NO₂⁻

Permanganate

MnO₄⁻

Arsenate

AsO₄³⁻

Phosphate

PO₄³⁻

Soluble (Solubility Rule 1)

Compounds containing alkali metals or ammonium ion (NH₄⁺) are generally…

Soluble (Solubility Rule 2)

Compounds containing nitrate or acetate are generally…

Silver (Ag⁺), Mercury (Hg), and Lead (Pb²⁺) (Solubility Rule 3)

Compounds containing halogens are generally soluble, except when combined with…

Strontium (Sr²⁺), Barium (Ba²⁺), and Lead (Pb²⁺) (Solubility Rule 4)

Compounds containing sulfates (SO₄²⁻) are generally soluble, except when combined with…

Strontium (Sr²⁺), Barium (Ba²⁺), and Calcium (Ca²⁺), and Rule 1 (Solubility Rule 5)

Compounds containing hydroxide (OH⁻) and sulfides (S²⁻) are generally insoluble, except when combined with…

Rule 1 (Solubility Rule 6)

Compounds containing carbonate (CO₃²⁻), phosphates (PO₄³⁻), and oxides (O²⁻) are generally insoluble, with exceptions as noted in…