1. Lab: Chemical Formula for Copper Chloride pg 6
Procedure
Mass 2.00 grams of the copper(II) chloride
Dissolve in the copper(II) chloride in 50 mL of distilled water with stirring and heat on a hot plate until almost boiling
TURN OFF HOT PLATE
Mass a piece of aluminum metal
Bend the metal in a curve to fit into the beaker
Gently place the metal in the hot copper(II) chloride solution

2. Keep the aluminum in the beaker until the reaction is complete and the solution is no longer blue (stirring will speed up the process)& no longer bubbling
Mass a piece of dry filter paper
Set up the filter apparatus and collect the copper
Rinse the copper TWICE with distilled water
Set the filter paper AND aluminum metal on a watch glass to dry overnight
Mass the dry copper and aluminum metal the next day

3. Data Table_ Value (units)
Mass 2.00 grams of copper(II) chloride _______________
Mass of aluminum metal before _______________
Mass of dry filter paper before filtering _______________
Mass of filter paper + copper after it dries _______________
Mass of dry aluminum metal after _______________
Mass of aluminum metal lost _______________

4. ___Al + ___CuCl2  ___AlCl3 + ___Cu
Balance the equation:
___Al + ___CuCl2  ___AlCl3 + ___Cu
2. Calculate the mass of Al that reacted
  Al before
- Al after
Al lost
3. How many moles of Al would that be? 2 3 2 3
1.21 g
0.93 g
0.28 g
0.28 g Al
1 mol Al
27.0 g Al
= 0.01 mol Al

5. ___Al + ___CuCl2  ___AlCl3 + ___Cu
4. Calculate the mass of Cu produced
5. How many moles of Cu would that be? 2 3 2 3
Dry filter + Cu
- Dry filter paper
Cu produced
1.63 g
0.69 g
0.94 g
0.94 g Cu
1 mol Cu
63.5 g Cu
= mol Cu

6. ___Al + ___CuCl2  ___AlCl3 + ___Cu
What is the mole ratio between Al and Cu?   
Determine the mass percent of copper in the compound
Determine the mass percent of chlorine in the compound 2 3 2 3
0.015 mol Cu
= 3 2
0.01 mol Al
0.94 g Cu
= 47 % Cu
2.00 g CuCl2
1.06 g Cl
= 53 % Cl
2.00 g CuCl2

7. Data Table_ Value (units)
Mass 2.00 grams of copper(II) chloride _______________
Mass of filter paper + copper after it dries _______________
Mass of dry filter paper before filtering _______________
Mass of copper produced _______________
Mass of aluminum metal before _______________
Mass of dry aluminum metal after _______________
Mass of aluminum metal lost _______________
2.00 g
1.63 g
0.69 g
0.94 g
1.21 g
0.93 g
0.28 g