Determining the Percentage of blur 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 permeate study, funnel, filter stand, Safety Precautions: brave safety eyeglasses at all times when transaction with chemicals and apron to parry ruining clothes. Method: Record the mass of the malachite sample. vex the malachite into the 250mL beaker and sum up 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 medley for about ten minutes stirring occasionally. When there is no sign of further reaction add about 10mL of water supply to the mixture. Allow to settle and then filter into the other 250mL beaker. bilk the residue remaining in the beaker with 10mL of water and filter this too. aft(prenominal ) all the liquid has been filtered discard the filter root word and unreacted solids. Place a small amount of steel wool into the beaker and forsake retentive. Note the burden of a piece of filter paper. percolate 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: bulk 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 2.25% close: The look into went well and there were very few problems. The only if experimental difficulty was during the first time the solution needfully to be filtered and the filter paper became clogged up and it took a long time to drain through and a small... If you regard to win a full essay, o rder it on our website: OrderCustomPaper.com
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