Determining the Percentage of copper 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 separate out study, funnel, filter stand, Safety Precautions: brave safety glasses at all times when transaction with chemicals and apron to deflect ruining clothes. Method: Record the mass of the malachite sample. touch the malachite into the 250mL beaker and tally 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 potpourri for about ten minutes stirring occasionally. When there is no sign of further reaction add about 10mL of irrigate to the mixture. Allow to settle and then filter into the other 250mL beaker. ravel the residue remaining in the beaker with 10mL of water and filter this too. after all th e liquid has been filtered discard the filter composing and unreacted solids. Place a small amount of steel wool into the beaker and abjure retentive. Note the burden of a piece of filter paper. perk up 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: push-down stack 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 cop per in malachite sample 2.25% decisiveness:! The look into went well and there were very few problems. The single experimental difficulty was during the first time the solution ask to be filtered and the filter paper became clogged up and it took a long time to drain through and a small... If you motive to win a full essay, order it on our website:
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