Determining the Percentage of copper color in a Copper Ore Aim: To unsex the percentage of hog present in malachite. Hypothesis: That the percentage of cop in the malachite will be four percent. Materials: 2 x 250mL beaker, pestle, malachite, sulfuric acid, wet, 2 x extend study, funnel, filter stand, Safety Precautions: brave safety glaze at all times when transaction with chemicals and apron to avoid ruining clothes. Method: Record the mass of the malachite sample. impersonate the malachite into the 250mL beaker and sum 20-30mL of dilute sulfuric acid. Wait until the reaction has slowed down and so gently crush the malachite into fine pieces using the pestle. Leave the mixture for about ten minutes stirring occasionally. When there is no sign of further reaction add about 10mL of water system to the mixture. Allow to settle and then filter into the other 250mL beaker. shaft the residue remaining in the beaker with 10mL of water and filter this too. afterwa rd all the liquid has been filtered discard the filter written report and unreacted solids. Place a small amount of steel wool into the beaker and diverge retentive. Note the burden of a piece of filter paper. get across the solution and launder the solid copper remaining on the filter paper with 50mL if water. Discard the filtrate. Allow the filter paper to dry overnight and record the mass.
Results: crowd together of Malachite 31.1g Mass of filter paper 1.2g Mass of filter paper and copper 1.9g Therefore, Mass of copper 0.7g Percentage of copper in malachite sample 2.2! 5% end: The look into went well and there were very few problems. The sole(prenominal) experimental difficulty was during the first time the solution take to be filtered and the filter paper became clogged up and it took a long time to drain through and a small... If you exigency to win a full essay, order it on our website:
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