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Copper Labs 5 labs, several days, 100 pts.
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Lab 1: Copper to Copper Nitrate
Clean wire with steel wool Mass copper wire: 1-2 grams
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Tare mass beaker Coil wire and place in bottom of beaker Add 20 mL Nitric Acid…GOGGLE UP!
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Cover with watchglass, protect your lungs
Transfer to hotplate in the hood Remove watchglass
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Data to get: 1. Mass of copper wire #.## g
5. Mass of 100 mL beaker ##.## g Don’t worry about other calculations today. Make observations-print qualitative sheet form internet and/or import photos and print final copy
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Lab 2: Copper Nitrate to Copper Hydroxide
6. Mass dry beaker and copper nitrate (lab 1)
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Add 20 mL of H2O, use a stirring rod!
Add 20 mL of NaOH, let the precipitate settle
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Place into funnel and wet with wash bottle
3.Mass a piece of filter paper and fold (lab 2) Place into funnel and wet with wash bottle
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Filter solution Use wash bottle to remove as much as possible
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Make sure filtrate is clear!
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Place filter, funnel and beaker together at station. I will pick up
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Lab 2: Data Only data needed today is mass of filter paper!
Transfer mass of 100 mL beaker over to #2 Once you have calculated moles of copper wire from lab 1 #3 you will transfer it over to #1 Continue with observation sheet
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Lab 2: Second Day Pull up filter paper and transfer to pre-massed beaker. Put on cart to dry fully
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Lab 3: Copper Hydroxide to Copper Oxide
5. Mass dry copper hydroxide, beaker and filter paper (lab 2)
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Transfer from filter paper
Wash off as much as possible
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Boil until all is black Let cool & settle
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Decant, decant, decant
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Transfer to tare beaker
Use wash bottle to transfer, decant
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Decant all excess water.
Deliver to specified area
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Data Transfer mass of 100 mL beaker to lab 3
Transfer moles of copper to lab 3
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Lab 4: CuO to CuCl2 3. Mass of CuO and beaker (Lab 3)
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Setup Lab 4 Using 50 mL beaker & GOGGLES, measure 20 mL of HCl
Pour over CuO, stir until color changes Put in fume hood
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Lab 5: The Return 3. Mass dry CuCl2
Add 40 mL of distilled water to beaker. Stir. Zinc Me! Stir, stir, stir!
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Stir some more! Continue to stir to allow the atoms to react with the zinc. You might need more zinc to banish the green color (too much is not good). POINT OF NO RETURN!!!!!!!!!!!!!!!!!!!!!!! Add 20 mL H2SO4 [GOGGLES!]
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Let extra zinc react with acid
Decant excess liquid Wash with distilled water 3x so it doesn’t look green when dried Transfer to pre-massed evaporating dish Set up steam bath Dry, “pencil poker test”
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Last step! Mass dry copper & evaporating dish Clean out dish & return
Calculate Evaluate Conclude Produce great lab reports!
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