Determining the Percentage of Copper in a Copper Ore Aim: To determine the percentage of copper present in malachite. Hypothesis: That the percentage of copper in the malachite will be four percent. Materials: 2 x 250mL beaker, pestle, malachite, sulfuric acid, water, 2 x filter paper, funnel, filter stand, Safety Precautions: Wear safety glasses at all times when dealing with chemicals and apron to avoid ruining clothes. Method: Record the mass of the malachite sample. Place the …
showed first 75 words of 418 total

showed last 75 words of 418 total
…was accurate, maybe slightly off. The hypothesis was proven incorrect but was very close. When the malachite and the sulfuric acid have been mixed and filtered part of what happens is: Cu(OH)2 + H2SO4 --> 2H2O + CuSO4 When the experiment has been finished the chemical reaction is shown in this equation: Fe + Cu2+ "" Fe2+ = Cu Bibliography: http://www.science.uwaterloo.ca/earth/waton/copper.html http://www.rodneyscience.freeyellow.com/page2.html