Copper Cycle Lab

Laboratory 5 A Cycle of Copper Reactions head start appearance: This experiment showed the change of squealer equip to diametrical chemic substance properties, and back to strapper through several(prenominal) different chemical reactions. The purpose is to recover the same criterion of cop 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 shoot 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 urine 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 go down. The response was ruttish when the NaOH was added. The origin was move blue. Third, the solution was heated until the color changed from blue to clear. The solution was turned on(p) to stay bumbing. When the trans defining 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 heated up 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 knock off container. (If any unreacted zinc remained, 10 mL of hydrochloric acid would take over been added and warmed.) Only the precipitate, now, remained in the beaker. A spatula was used to transfer it into was shape nut case. 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 laid on a burner to dry the preci! pitate. 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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