Qualitative Analysis
Qualitative analysis is used in the determination of the identity of a substance. It is different from quantitative analysis, which deals with the determination of the amount of a substance. In this experiment, qualitative analysis techniques are used to determine whether or not a sample contains a certain ion. When using this method, an unknown and a reactant are mixed. The result of the reaction leads to a conclusion about the presence or absence of certain ions in the unknown. Many ions react in similar ways, and although the addition of one reagent to an unknown may not identify the ion, it limits the possibilities as to what the ion could be. A sequence of reactions used to analyze a sample is called a scheme, and it usually requires a large number of reagents and separation steps.For this experiment, the unknown may contain anywhere from 2 to all of the following cations and anions: The following reagents are used to identify the ions: .1M Ba(NO3)2 (labeled as .1M Ba2+)
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Some common words found in the essay are:
Cu2+ Cr3+, Cl- PO43-, Ba2+ Ag+, Ag+ HCl, Ag3PO4 Ag3PO4, Introduction Qualitative, PO43- Cu2+, PO43- Ag+, Cu2+ NH4+, NH4OH NaOH, flow chart, precipitate formed, cl- po43-, 2 drops, flow charts, ions unknown, test tube, h2so4 added, precipitate form, left unreacted, 2 drops unknown, 2 drops reagent, flow chart incorrect, ions left unreacted, unreacted naoh added,
Approximate Word count = 2133
Approximate Pages = 9 (250 words per page double spaced)
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