Nine-BottleProblem-2011

Nine-BottleProblem-2011 - Ch.10 Qualitative Analysis: The...

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10-1 Ch.10 Qualitative Analysis: The Nine-Bottle Problem Introduction In this experiment you will be given nine numbered bottles, each of which contains a different unknown solution. Your task will be to identify the contents of each bottle, using no other reagents or indicators. One or more of the unknown solutions must serve as reagents for identifying another unknown solution. In solving this chemical "crossword" puzzle, you will need to use your knowledge about the solubilities and colors of common inorganic precipitates, about the formation of metal-ion complexes, about the interactions of acids and bases and the possible evolution of volatile acids or bases, and about oxidation-reduction reactions. Preliminary Work: The Six-Bottle Problem In order to become familiar with the strategy involved in solving the nine-bottle problem, you will initially gain experience by considering a simpler problem consisting of just six unknown solutions: (1) AgNO 3 , (2) HNO 3 , (3) NaBr, (4) NaCI, (5) Na 2 CO 3 , and (6) pure H 2 O. These solutions are all colorless and will be assumed to be contained in numbered, but otherwise
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Nine-BottleProblem-2011 - Ch.10 Qualitative Analysis: The...

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