General Chemistry Online: Companion Notes: Compounds: Polyatomic ions: Quiz

2. Veterinarians administer an 0.2 percent potassium permanganate solution to cows and horses as an antidote for plant alkaloid poisoning. A bottle that contains potassium permanganate solution might be labelled:

KMnO₄

K₂MnO₃

K₂MnO₄

KMgO₄

KMnO₃

3. Stable compounds containing the iodite ion have never been prepared. The formula of the iodite ion could be:

IO₂^-2

IO₃^-

HIO₃^-

IO^2-

IO₂^-

4. An old bottle labelled "sodium biphosphate" contains:

NaH₂PO₄

NaHPO₃

NaH₂PO₃

Na₃PO₄

Na₂HPO₄

5. NaClO₃ has been used in herbicides and in explosives. The name of this compound is:

sodium perchlorate

sodium chloride trioxide

sodium chloride

sodium chlorite

sodium chlorate

6. The SCN^- ion forms a bright red complex with iron(II) ions. The SCN^- ion is called the:

cyanide ion

cyanate ion

thiocyanate ion

sulfurocyanide ion

thiocyanide ion

thiocyanite ion

7. If TeO₄^2- is the tellurate ion, the name of the TeO₃^2- ion is expected to be:

tellurite

pertellurate

telluride

hemitellurate

hypotellurite

8. Sulfite ion is often used to "fix" photographic film during development. The formula of the sulfite ion is:

SO₃^-

HSO₄^-

SO₄^2-

S₂O₃^-2

SO₃^2-

9. If the selenate ion has formula SeO₄^2-, the selenite ion might be:

SeO₄^-

SeO₅^2-

SeO₃^2-

SeO₄⁺²

SeO₄^3-

10. Perchlorate compounds are used in explosives and jet fuels. The formula of the perchlorate ion is

ClO₄^-2

ClO₃^-

ClO₄^-

ClO₃^2-

HClO₃^-

General Chemistry Online! Quiz