Oxoacids, Salts, and Polyatomic Ions

A set of vocabulary flashcards covering common polyatomic ions, oxoacids, and their associated salts.

Polyatomic Ions Chart

A reference slide presenting common polyatomic cations and anions to memorize, including ammonium, carbonate, nitrite, nitrate, sulfite, sulfate, phosphate, and hypochlorite.

Oxoacids and Their Salts Table

A reference table listing key oxoacids and their corresponding polyatomic anion salts.

Polyatomic Ions

Cations and anions that are composed of multiple atoms, forming molecular ions.

Ammonium

A polyatomic cation with the chemical formula $\text{NH}_4^+$.

Carbonate

A polyatomic anion with the chemical formula $\text{CO}_3^{2-}$.

Nitrite

A polyatomic anion with the formula $\text{NO}_2^-$, corresponding to nitrous acid.

Nitrate

A polyatomic anion with the formula $\text{NO}_3^-$, corresponding to nitric acid.

Sulfite

A polyatomic anion with the formula $\text{SO}_3^{2-}$, corresponding to sulfurous acid.

Sulfate

A polyatomic anion with the formula $\text{SO}_4^{2-}$, corresponding to sulfuric acid.

Phosphite

A polyatomic anion with the formula $\text{PO}_3^{3-}$, corresponding to phosphorous acid.

Phosphate

A polyatomic anion with the formula $\text{PO}_4^{3-}$, corresponding to phosphoric acid.

Hypochlorite

A polyatomic anion with the formula $\text{ClO}^-$, corresponding to hypochlorous acid.

Chlorite

A polyatomic anion with the formula $\text{ClO}_2^-$, corresponding to chlorous acid.

Chlorate

A polyatomic anion with the formula $\text{ClO}_3^-$, corresponding to chloric acid.

Perchlorate

A polyatomic anion with the formula $\text{ClO}_4^-$, corresponding to perchloric acid.

Nitrous acid

An oxoacid with the chemical formula $\text{HNO}_2$, which yields the nitrite anion.

Nitric acid

An oxoacid with the chemical formula $\text{HNO}_3$, which yields the nitrate anion.

Sulfurous acid

An oxoacid with the chemical formula $\text{H}_2\text{SO}_3$, which yields the sulfite anion.

Sulfuric acid

An oxoacid with the chemical formula $\text{H}_2\text{SO}_4$, which yields the sulfate anion.

Phosphorous acid

An oxoacid with the chemical formula $\text{H}_3\text{PO}_3$, which yields the phosphite anion.

Phosphoric acid

An oxoacid with the chemical formula $\text{H}_3\text{PO}_4$, which yields the phosphate anion.

Hypochlorous acid

An oxoacid with the chemical formula $\text{HClO}$, which yields the hypochlorite anion.

Chlorous acid

An oxoacid with the chemical formula $\text{HClO}_2$, which yields the chlorite anion.

Chloric acid

An oxoacid with the chemical formula $\text{HClO}_3$, which yields the chlorate anion.

Perchloric acid

An oxoacid with the chemical formula $\text{HClO}_4$, which yields the perchlorate anion.