How many grams of copper would you expect to form from 34.0g of Fe?

Question

theretical yeild

Answer 1

The only way to form copper (Cu) from iron (Fe) is in an oxidation/reduction reaction, where Cu(s) is reduced in the presence or Fe²⁺ (or 3+) which is oxidized.  As others have stated, it would be helpful to have the full question. Assuming Fe²⁺is involved, the half reactions would be:

Cu²⁺ + 2e^- ==>Cu

Fe ==>Fe²⁺ + 2e^-

And the overall reaction is:

Fe(s) + Cu²⁺ ==> Cu(s) + Fe²⁺

1 moles Fe produces 1 mole Cu

moles Fe present = 34.0 g x 1 mole/55.8 g = 0.609 moles Fe

moles Cu formed = 0.609 moles Cu

mass Cu formed = 0.609 moles Cu x 63.5 g/mole = 38.7 g copper formed