lab 5 - A Cycle of Copper Reaction Introduction: Students...

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A Cycle of Copper Reaction Introduction: Students were asked to analyze the sequence of reactions of color that from a cycle, along with the color and physical property changes that indicate those reaction. This experiment also required students to gain the skill in recording observations and interpreting them in terms of chemical equations. To use a simple classification scheme for grouping chemical reactions by reaction type. To practice quantitative laboratory techniques by determining the percentage of the initial sample of that is recovered. Method Cut a length of pure copper wire that weighs about 0.5g.coil the wire into a flat spiral, place it in the bottom of a 250mL beaker, and in the fume hood add 4.0mL of concentrated nitric acid, HNO 3. Record the observation, as the solution been swirl around in the beaker until the copper is completely dissolved. After that dissolvent of the copper add deionized water until the beaker is half way full. Stir the solution with a glass rod, and then add 30mL of 3.0 M NaOH to precipitate Cu(OH) 2. Record the observation.
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This note was uploaded on 05/03/2008 for the course CHM 102 taught by Professor Gradstudent during the Spring '06 term at Rhode Island.

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lab 5 - A Cycle of Copper Reaction Introduction: Students...

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