Cu Synthesis Lab

According to Figure 4 and 5, the moles of Cu initially obtained and at completion, differentiated. It was evident that the initial moles of Cu (0.0254), did not regenerate all the amount, as 0.0124 moles of Cu was attained. In regards to this, the no. moles that was eliminated was approximately, 0.013. Respectively, in Figure 3, a large deviation amongst the initial and final quantity of copper, this implies that the rest of the mass that had diminished, was greater than the final product. These findings correlate to Figure 2 calculations as, the % yield was reasonably insignificant of 49.12%. The initial mass of Copper was,1.598g; whereas, the final amount of copper was, 0.785g. This suggests that the 0.813 g of copper could have transitioned into Hydrogen gas, and therefore contradicting the hypothesis. This may be contributed by the underlying foundations of the Law of Conversation of Mass, whereby the mass of copper would remain neutral throughout the entire process; though, majority of the mass was deprived. Another cause was during the final step of the copper cycle (recovering copper), the product of copper sulphate and zinc disintegrated to produce zinc (II) sulphate and copper (as copper is below zinc in the activity series).
Zinc (II) Sulphate decayed into another chemical equation which encompassed of sulphuric acid was added to remove any zinc residue that forms zinc sulphate (since zinc is above hydrogen within the activity