The Sequence Of Chemical Reactions :: essays research papers

The ecological succession of Chemical ReactionsINTRODUCTION This experiment was to recover the most amount of hog after itis subjected to a sequence of reactions. The hair is originall(a)y in unscathedform, but the reactions will turn it into free Cu+2 ions be adrift in closure.The ions will then be regrouped to form solid blur once again. During thisprocess, however, some of the Cu+2 ions may be lost. The slovenly person will subjectedto changes in pH and heat. These steps were responsible for the breakdown and reconstruction of the copper. The percent of copper retrieved will reflect theskill with which the reactions were administered.EXPERIMENTAL On an analytical balance, measure the mass of the copper while inthe vial. lease approximately 0.35 g into a 250 mL beaker. check the balanceand saucer the mass of the remaining mixture in the vial. In the laboratoryhood, dispel the copper with 3 mL of nitric acid. Allow the beaker toremain below the hood until the fumes cea se. The remaining solution should beblue. Bring the beaker second to the lab station and bring in 10 mL of distilledwater. Stir the mixture, all the while adding 8 mL of 6M of NaOH to thebeaker. Check with litmus paper to train that it is slightly basic. Fill thebeaker with up to 100 mL mark with distilled water. estrus the solution and allowit to boil for 5 minutes. Prepare a super C bottle with hot water. Filter thesolution and rinse the beaker with the hot water. moisten the filter cake withhot distilled water. Transfer the filter paper into a clean beaker. Add 10mL of 3M sulfuric acid to the beaker in order to dissolve the filtrate. Removeand rinse the filter paper. Now add 0.35 g of zinc powder to the solution andstir until the solution becomes clear. solve the excess zinc with moresulfuric acid. Decant the liquid with a stirring rod, retaining only the copper.Rinse the copper with distilled water and steam dry. deal the mass.DATA/RESULTS initial mass of copper (g)0 .319 final mass ofcopper (g)0.305 % recovery = (final mass/initial mass) x 10095.6OBSERVATIONS -between steps 1 through 4 the solution is blue. -between steps 5through 8 the solution is dark brown. -between steps 9 through 12 the solutionis blue-green. -between steps 13 through 16 the Zinc turns red as the blue colorslowly leaves the solution.CALCULATIONS % Recovery = (final mass / initial mass) x 100 % Recovery = (0.