Copper Labs

1
Copper Labs

• 5 labs, several days, 100 pts.

2
Lab 1 Copper to Copper Nitrate

• Clean wire with steel wool
• Mass copper wire 1-2 grams

3

• Tare mass beaker
• Coil wire and place in bottom of beaker
• Add 20 mL Nitric AcidGOGGLE UP!

4

• Cover with watchglass, protect your lungs
• Transfer to hotplate in the hood
• Remove watchglass

5
Data to get

• 1. Mass of copper wire . g
• 5. Mass of 100 mL beaker . g
• Dont worry about other calculations today.
• Make observations-print qualitative sheet form
  internet and/or import photos and print final copy

6
Lab 2 Copper Nitrate to Copper Hydroxide

• 6. Mass dry beaker and copper nitrate (lab 1)

7

• Add 20 mL of NaOH, use a stirring rod!
• Let the precipitate settle

8

• 3.Mass a piece of filter paper and fold (lab 2)
• Place into funnel and wet with wash bottle

9

• Filter solution
• Use wash bottle to remove as much as possible

10

• Make sure filtrate is clear!

11

• Place filter, funnel and flask on cart

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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

13
Lab 2 Second Day

• Pull up filter paper and transfer to pre-massed
  beaker.
• Put on cart to dry fully

14
Lab 3 Copper Hydroxide to Copper Oxide

• 5. Mass dry copper hydroxide, beaker and filter
  paper (lab 2)

15

• Transfer from filter paper
• Wash off as much as possible

16

• Boil until all is black
• Let cool settle

17
Decant, decant, decant
18
Transfer to tare beaker

• Use wash bottle to
• transfer, decant

19
Decant all excess water.

• Deliver to specified area

20
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

23
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!

25
Let extra zinc react with acid

• Decant excess liquid
• Wash with distilled water 3x so it doesnt 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!