Copper Cycle Lab

Laboratory 5 A Cycle of Copper Reactions first appearance: This experiment showed the change of squealer equip to antithetic chemic substance properties, and back to crap through some(prenominal) different chemical reactions. The purpose is to recover the same quantity of shit 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 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 sharp. The effect was stimulated when the NaOH was added. The resolve was move blue. Third, the solution was heated until the color changed from blue to clear. The solution was aroused to stay bumbing. When the trans defining was comp lete, the beaker was taken off the burner and the precipitate was allowed to settle. The supernatant transparent was whence decanted. 200 mL of sweltering 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 yen container. (If any unre acted zinc remained, 10 mL of hydrochloric a! cid would devour been added and warmed.) Only the precipitate, now, remained in the beaker. A spatula was used to transfer it into was see furnish. 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 lay 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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