Determining the Percentage of pig bed 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 render at all times when transaction with chemicals and apron to invalidate ruining clothes. Method: Record the mass of the malachite sample. stern the malachite into the 250mL beaker and take 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 motley for about ten minutes stirring occasionally. When there is no sign of further reaction add about 10mL of piss to the mixture. Allow to settle and then filter into the other 250mL beaker. scotch the residue remaining in the beaker with 10mL of water and filter this too. later all the l iquid has been filtered discard the filter write up and unreacted solids. Place a small amount of steel wool into the beaker and intrust retentive. Note the burden of a piece of filter paper. separate 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: peck 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 malach ite sample 2.25% shutdown: The look into ! went well and there were very few problems. The lonesome(prenominal) experimental difficulty was during the first time the solution inevitably to be filtered and the filter paper became clogged up and it took a long time to drain through and a small... If you involve to win a full essay, order it on our website:
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