Copper Synthesis Lab Report

In the experiment, synthesis of copper compounds, the purpose was to recover the original amount of copper after series of chemical reactions. Then returning the copper back to its original form. The copper wire originally weighted 1.0099 g, but after the copper was transformed into Cu(OH)2 to CuO to CuSO4 and finally into Cu, the mass of the recovered copper was 1.1023g; the percent yield was 109%. Since the percent yield is more than 100%, an error must have occurred somewhere in the lab. A possible error could have occurred due to removing the evaporating dish from the Bunsen burner quickly not allowing all the water to be evaporated. Therefore, there was water present in the final mass and it could have caused the percent yield to be greater