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

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Companion Notes

Compounds

Polyatomic ions

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

sulfurocyanide ion

cyanide ion

cyanate ion

thiocyanite ion

thiocyanide ion

thiocyanate ion

2. Phosphate ion is the most common:

-3 anion

-1 anion

+1 anion

-2 anion

+1 cation

3. Which of the following compounds contains a polyatomic ion?

Na₂SO₄

C₆H₁₂O₆

CO₂

LiCl

KBr

4. Ammonium nitrate is used as a fertilizer by farmers and as an explosive by terrorists. The formula of ammonium nitrate is

AmNO₂

(NH₄)₂NO₂

NH₃NO₂

NH₄NO₃

NH₃NO₃

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

CO₃^2-

(CO₃)₂^4-

HCO₃^-

HCO₃^2-

H₂CO₃^-

6. Deadly lead(II) acetate is sometimes called "sugar of lead" because it has a very sweet taste; it was once used to sweeten wine! Lead(II) acetate is written as:

Pb(C₂O₄)₂

PbCO₃

Pb(C₂H₃O₂)₂

PbC₂H₃O₂

PbC₂O₄

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. The NO₄^- ion exists in small quantities in the upper atmosphere. Using the naming guidelines for polyatomic ions, the name of this ion would be:

nitrite

nitrate

supernitrate

pernitrate

hyponitrite

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

SO₃^-

SO₄^2-

HSO₄^-

SO₃^2-

S₂O₃^-2

10. Phosphate ion is a basic building block of minerals, bones, teeth, and DNA. The formula of the phosphate ion is:

PO₃^-

PO₄^3-

HPO₄^-2

PO₄^2-

PhO₂^-2

General Chemistry Online! Quiz