Packet for Cu lab, naming and writing formulas, reaction types and ...

1) Percent recovery is a term used by chemists to describe how much of a compound is recovered following a series of
reactions compared to the original amount. Go back to your observations from the first day of the copper lab to find your
original amount of copper:
Original amount of copper ________
You will use this number and the mass you just measured at the end of the lab to calculate percent recovery.
Cu
final
Percent recovery = x100 = ________________ x100
=
Cu
initial
2) Look back at the series of procedures you completed. Explain why your percent recovery of copper is not 100%. In other
words, give at least 2 examples of steps where a loss of copper may have occurred.
3) Use your observations to complete a drawing of the cycle that the copper went through. It should have these features:
(ID20.3)
Each arrow represents a reaction. At the end of the arrow is the copper product that was made along with its state
(s, l, g, aq). Alongside each arrow put the ingredients that you added to the test tube and their state. Lastly, along
each arrow write the main observation you made.