RxnsCopperds07

RxnsCopperds07 - Observations of Cu(NO 3 2 Blue liquid...

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100 x Experiment of Start at Copper of Mass Experiment of End at Copper of Mass Copper of % Mass = DATA SHEET Date March 31, 2008 Name Shannon Polson Reactions of Copper Partner Justin and Brenda Initial weight of copper: 1.004 grams For the following observations, indicate and describe the formation of any precipitates (see your textbook). Also, indicate whether the solution is clear (with no precipitate), colored vs. colorless, etc. Observations include the physical state of the system as well. You are describing the compound or solution, not the chemical reaction that occurred. Observations of Cu Thin, wiry, solid
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Unformatted text preview: Observations of Cu(NO 3 ) 2 Blue, liquid Observations of Cu(OH) 2 Kind of frothy and blue Observations of CuO Black Observations of CuSO 4 Blue with brown clumps Observations of Cu Brown dust Weight of filter paper and dish 31.139 grams Weight of filter paper, dish, and final dried copper 31.871 grams Weight of recovered copper .732 grams Since we know the mass of the copper we began with, and the mass of the copper we finished with, we can calculate the mass % of copper recovered. Do this for your data. Show work. . 723/1.004*100= 72.9%...
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This lab report was uploaded on 04/18/2008 for the course CHEM 1151L taught by Professor Stone during the Spring '08 term at Clayton.

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