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Unformatted text preview: 0.005 M 25 mL 0.4164 2 nd 0.005 M 12.5 mL 0.0025 M 25 mL 0.2019 3 rd 0.0937 The relationship between concentration and absorbency is a simple one to one ratio. Absorbency increases as the same rate that the concentration does. The graph is acceptable because it shows this connection. 4. The Preparation of the Complex Ion. As ammonia was added to copper(II) sulfate pentahydrate, the solution turned a cloudy blue color. The precipitate making up the cloudiness was Cu(OH) 2 . As more ammonia was added, the solution became a clear, dark blue color. This new solution includes [Cu(NH3) 4 ] 2+ . 5. Concentration of the Unknown. The concentration of the unknown was 1.51468 0.01727 M....
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This note was uploaded on 08/07/2009 for the course CH 116 taught by Professor March during the Spring '09 term at University of Alabama at Birmingham.
- Spring '09