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Home :Companion Notes :Compounds :Polyatomic ionsPrint | Comment

Quiz
1. Nitrite ion is used in bleaching, dyeing and printing fabrics. The formula of the nitrite ion is:
N2O3-2NO42-NO2-HNO4-NO3-
2. 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:
pernitratesupernitratenitratehyponitritenitrite
3. Hypochlorite ion is the active ingredient in Chlorox bleach. The formula of the hypochlorite ion is:
ClO3-ClO2-HClO-ClO-ClO2-2
4. Sodium sulfate occurs in nature as the minerals mirabilite and thenardite. The formula of the sulfate ion is:
S2O3-2SO42-SO32-HSO4-SO4-
5. Dichromate ions are used in the tanning of leather. Dichromate ion is:
Cr2O72-HCrO4-Cr2O32-CrO42-HCrO3-
6. if AsO43- is the arsenate ion, the name of the AsO33- ion is expected to be:
arsenitearsenideperarsenatehypoarsenitehemiarsenate
7. NaClO4 is used to manufacture explosives. NaClO is the active ingredient in Chlorox bleach. The names of the anions in these compounds are, respectively,
exochloride and endochlorideperchlorate and hypochlorite
hyperchlorite and hypochloritequadrochloroxide and monochloroxide
chlorate and chloritetetroxychlorine and monoxychlorine
8. Chlorite compounds are extremely explosive when they come into contact with combustible material. The formula of the chlorite ion is:
ClO2-ClO2-HClO3-ClO3-ClO2-2
9. 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:
CO22-CO2-HCO3-CO32-CO3-
10. 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:
NaC2H3O2Na2C2H3O2NaAc2NaC2H4ONa2C2O4
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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