Untitled - Gravimetric Determination of Nickel Connie Suen...

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Gravimetric Determination of Nickel Connie Suen October 5th, 2009 Unknown #6 Tuesday A.M Lab (Section 13) Introduction: This lab is en example of a precipitation reaction involving organic and inorganic reagents. The unknown compound is a mixture that contains nickel salt which is to be reacted with a solution of dimethylglyoxime (DMG) and aqueous ammonia in order to precipitate nickel dimethylglyoximate. the precipitate is a very intense red. The resulting compound of nickel and DMG is rather insoluble in aqueous ammonia, so once fully precipitated out of solution, will be filtered dried and analyzed for percent nickel. Experiment: The experiment's procedure is thoroughly described step-by-step in the lab manual, no changes were made in the course of the experiment. Theory: Reaction between Nickel and DMG: Ni 2+ + 2HDMG --> Ni(DMG)2 + 2H+ <insert picture here> Chemical Structure of Dimethylglyoxime <insert picture here> Results: Table 1 -- Laboratory Measurements and Calculations for the Gravimetric Determination of
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This note was uploaded on 06/05/2010 for the course CHEM. chm3120 taught by Professor Diaz during the Spring '10 term at University of Central Florida.

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Untitled - Gravimetric Determination of Nickel Connie Suen...

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