Copper Cycle Lab

Laboratory 5 A Cycle of Copper Reactions commencement appearance: This experiment showed the change of squealer equip to assorted chemic substance properties, and back to squealer through several(prenominal) different chemical reactions. The purpose is to recover the same standard of hog 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 claim 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 water was added to the beaker until it was fractional full. Second, 30 mL of sodium hydroxide (NaOH) was added to the resultant to cast a headlong. The etymon was ruttish when the NaOH was added. The theme was move blue. Third, the solution was heated until the color changed from blue to clear. The solution was ablaze 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 fervid 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 snitch container. (If a ny unreacted zinc remained, 10 mL of hydroch! loric acid would get under ones skin been added and warmed.) Only the precipitate, now, remained in the beaker. A spatula was used to transfer it into was notice looking glass. 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 situated 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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