Qualitative Analysis - Qualitative Analysis By: Parker...

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Qualitative Analysis By: Parker Ashbaugh Partners: Mike Spinner Ashley O Connell Emily Josephin 3/21/07 Chem Lab 104A Section 47 T.A. Yisheng Xu Abstract A technique known as a spot test was used to determine the basic properties of some known cations. These properties and the respective spot tests used to find them would be later used in cooperation with an analysis scheme. The analysis scheme allowed us to correctly determine the composition of a known and solution and later the composition of an unknown mixture of cations.
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Introduction While performing this experiment five major objectives will be met. These objectives are to prepare a 0.1M solution from a salt, perform a series of spot tests on a select set of cations, determine some basic properties of the cation set, separate ions using precipitation and centrifugation, and lastly use an analysis scheme to identify cations in an unknown sample. The first part of the lab was to perform spot tests on a select set of cations in order to determine some basic qualities that each cation possess, which will later be used in the analysis scheme to identify some unknowns. Nine tests were performed on 8 cations, a mixture and a blank for a total of 90 different observations. Since this is improbable for one student to perform all the tests in one class period, each group was assigned one test to perform on the 8 cations, the mixture and the blank, and the class results were collaborated. Four types of reactions were used in this
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Qualitative Analysis - Qualitative Analysis By: Parker...

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