Copper Cycle Lab

Laboratory 5 A Cycle of Copper Reactions low gear appearance: This experiment showed the change of squealer equip to antithetic chemic substance properties, and back to pig through some(prenominal) different chemical reactions. The purpose is to recover the same measure of grunter as the amount started with. Procedure: First, 5.0 grams of pure copper wire was obtained. The wire was bright and shiny and did not convey to be cleaned. The copper wire was coiled and place into a 250 mL beaker. 4.0 mL of nitric acid (HNO3) was added into the beaker. When all of the copper had dissolved, deionized piddle was added to the beaker until it was fractional full. Second, 30 mL of sodium hydrated oxide (NaOH) was added to the resultant to cast a come down. The result was aroused when the NaOH was added. The closure was move blue. Third, the solution was heated until the color changed from blue to clear. The solution was ruttish to stay bumbing. When the trans defin ing was complete, the beaker was taken off the burner and the precipitate was allowed to settle. The supernatant transparent was whence decanted. 200 mL of sulphurous deionized water then added to the beaker and again decanted to remove the excess NaNO3. Fourth, 15 mL of sulfuric acid (H2SO4) was added to the precipitate. The solution was being stirred during the reaction. The solution turned blue. Fifth, 2.0 grams of 30-mesh zinc metal was added to the solution. The solution was stirred until the solution became clear. When the formation of gas had slowed down, the liquid was decanted into a intemperance container. (If any unreacted zinc remained, 10 mL of hydrochloric acid would fall in been added and warmed.) Only the precipitate, now, remained in the beaker. A spatula was used to transfer it into was ticker trash. The precipitate was swear out with 5 mL of deionized water and decanted. The precipitate was then rinse with ethanol and decanted. The watch glass was h ardened on a burner to dry the precipitate. ! When dry, the solid was placed into a...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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