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Home :Companion Notes :Compounds :Polyatomic ionsPrint | Comment

Quiz
1. Iodate ion is used as a disinfectant. The formula of the iodate ion is
IO3-IO4-IO32-HIO3-IO4-2
2. Phosphate ion is a basic building block of minerals, bones, teeth, and DNA. The formula of the phosphate ion is:
PO3-PhO2-2PO42-PO43-HPO4-2
3. Sodium bicarbonate is "baking soda", the active ingredient in many antacids. The formula of the bicarbonate ion is:
(CO3)24- HCO32-H2CO3-HCO3-CO32-
4. Sodium sulfate occurs in nature as the minerals mirabilite and thenardite. The formula of the sulfate ion is:
SO32-SO4-S2O3-2HSO4-SO42-
5. 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:
nitratesupernitratehyponitritenitritepernitrate
6. NaClO4 is used to manufacture explosives. NaClO is the active ingredient in Chlorox bleach. The names of the anions in these compounds are, respectively,
chlorate and chloriteperchlorate and hypochlorite
exochloride and endochloridehyperchlorite and hypochlorite
tetroxychlorine and monoxychlorinequadrochloroxide and monochloroxide
7. Sodium acetate is used in chemical handwarmers and heating pads because it gives up a large amount of heat when it changes from a liquid to a solid. The formula for this compound is:
NaAc2NaC2H4ONa2C2O4NaC2H3O2Na2C2H3O2
8. Stable compounds containing the iodite ion have never been prepared. The formula of the iodite ion could be:
IO2-IO2-IO2-2IO3-HIO3-
9. Hypobromite compounds are used to treat water supplies that are heavily contaminated with bacteria. The formula of the hypobromite ion is:
BrO2-2HBrO-BrO2-BrO-BrO3-
10. Sodium peroxide can be used for oxygen generation in diving bells and submarines, since it reacts with carbon dioxide and produces oxygen gas. The peroxide ion has the formula:
O3-O2+O22-O2-O2-
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Copyright © 1997-2005 by Fred Senese
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Last Revised 06/11/07.URL: http://antoine.frostburg.edu/chem/senese/101/compounds/polyatomic-quiz.shtml