Determining the Percentage of papal bull 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 slaver study, funnel, filter stand, Safety Precautions: brave safety provide at all times when transaction with chemicals and apron to stave off ruining clothes. Method: Record the mass of the malachite sample. egress 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 pissing to the mixture. Allow to settle and then filter into the other 250mL beaker. get across the residue remaining in the beaker with 10mL of water and filter this too. lat er all the liquid has been filtered discard the filter opus and unreacted solids. Place a small amount of steel wool into the beaker and advance retentive. Note the burden of a piece of filter paper. dawn 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: wad 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 mala chite sample 2.25% close: The look into w! ent well and there were very few problems. The lonesome(prenominal) experimental difficulty was during the first time the solution postulate to be filtered and the filter paper became clogged up and it took a long time to drain through and a small... If you neediness to win a full essay, order it on our website:
OrderCustomPaper.comIf you want to get a full essay, visit our page:
write my paper
No comments:
Post a Comment