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Home :Companion Notes :Compounds :Polyatomic ionsPrint | Comment

Quiz
1. Chlorine dioxide is used as an oxidizing agent in many industrial processes. Because it is explosive, it is never shipped, but prepared as needed by a reaction involving the more stable chlorate ion. The formula of the chlorate ion is:
ClO4-2ClO32-ClO3-ClO2-ClO4-
2. Stable compounds containing the iodite ion have never been prepared. The formula of the iodite ion could be:
IO2-HIO3-IO2-2IO2-IO3-
3. Perbromate ion is extremely unstable for quantum mechanical reasons. If it existed, the formula of the perbromate ion could be:
BrO4-BrO3-BrO32-BrO4-2HBrO3-
4. A sudden surge in the concentration of thiosulfate ions in geyser water may be a sign that a volcanic eruption is imminent. The thiosulfate ion is:
S2O32-S2O42-SO42-SO32-S2O4-
5. Hard water contains high concentrations of calcium ions. The water is "softened" by treatment with carbonate ions, which precipitates the calcium as insoluble calcium carbonate. The formula of carbonate ion is:
CO2-CO32-CO22-HCO3-CO3-
6. Dichromate ions are used in the tanning of leather. Dichromate ion is:
Cr2O72-Cr2O32-HCrO3-HCrO4-CrO42-
7. Hydroxide ion solutions are sprayed on pretzels to give them their characteristic texture; the ion is removed by reaction with carbon dioxide during baking. The hydroxide ion is:
HO3-HO2-HO2+HO2-OH-
8. Which of the following compounds contains a polyatomic ion?
Na2SO4LiClC6H12O6CO2KBr
9. if AsO43- is the arsenate ion, the name of the AsO33- ion is expected to be:
arsenidehemiarsenatehypoarsenitearseniteperarsenate
10. An old bottle labelled "sodium biphosphate" contains:
Na2HPO4NaH2PO3Na3PO4NaH2PO4NaHPO3
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General Chemistry Online! Quiz

Copyright © 1997-2005 by Fred Senese
Comments & questions to fsenese@frostburg.edu
Last Revised 06/11/07.URL: http://antoine.frostburg.edu/chem/senese/101/compounds/polyatomic-quiz.shtml