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

5. Bromate ion was baked into bread until recently as a preservative; it has been found to cause cancer in laboratory animals. The formula of the bromate ion is

BrO₃^-

BrO₃^2-

BrO₄^-2

BrO₄^-

HBrO₃^-

6. Sodium bicarbonate is "baking soda", the active ingredient in many antacids. The formula of the bicarbonate ion is:

CO₃^2-

(CO₃)₂^4-

H₂CO₃^-

HCO₃^2-

HCO₃^-

7. Periodate ion is used in staining procedures that improve the quality of microscopic images. The formula of the periodate ion is:

IO₄^-

HIO₃^-

IO₄^-2

IO₃^2-

IO₃^-

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

sodium chloride

sodium chlorite

sodium chlorate

sodium chloride trioxide

sodium perchlorate

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

NaH₂PO₄

Na₃PO₄

NaH₂PO₃

Na₂HPO₄

NaHPO₃

10. Chlorite compounds are extremely explosive when they come into contact with combustible material. The formula of the chlorite ion is:

ClO^2-

ClO₃^-

ClO₂^-

HClO₃^-

ClO₂^-2

General Chemistry Online! Quiz