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Home :Companion Notes :Compounds :Polyatomic ionsPrint | Comment

Quiz
1. Nitrates are used in making rocket propellants, fertilizers, dynamite, and fireworks. The formula of the nitrate ion is:
N2O3-2NO4-NO3-NO2-NO32-
2. Phosphate ion is a basic building block of minerals, bones, teeth, and DNA. The formula of the phosphate ion is:
PO43-PO42-PhO2-2PO3-HPO4-2
3. 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:
O2-O3-O2-O22-O2+
4. Sodium bicarbonate is "baking soda", the active ingredient in many antacids. The formula of the bicarbonate ion is:
HCO3-CO32-H2CO3- HCO32-(CO3)24-
5. 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:
Na2C2O4NaC2H3O2Na2C2H3O2NaC2H4ONaAc2
6. Sodium sulfate occurs in nature as the minerals mirabilite and thenardite. The formula of the sulfate ion is:
SO42-S2O3-2HSO4-SO4-SO32-
7. Perchlorate compounds are used in explosives and jet fuels. The formula of the perchlorate ion is
ClO4-2ClO32-ClO3-ClO4-HClO3-
8. if AsO43- is the arsenate ion, the name of the AsO33- ion is expected to be:
arsenidehypoarsenitehemiarsenateperarsenatearsenite
9. Perbromate ion is extremely unstable for quantum mechanical reasons. If it existed, the formula of the perbromate ion could be:
BrO4-BrO3-BrO32-HBrO3-BrO4-2
10. 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:
HO2-HO2+OH-HO3-HO2-
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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