5 - + H 2 O (l) + SO 42-(aq) Turns into clear bright blue....

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Alderfer 1 Nathan Alderfer AP Chemistry Lab #3: Observing Chemical Reactions & Writing Equations Procedure Reactants Products Observations 1a. 2Cu (s) + O 2(g) 2CuO (s) Turned dark gray 1b. CuO (s) + H 2 SO 4(aq) H 2 O (l) + CuSO 4(s) Color turned back into orange/red. Filtrate pale transparent blue 1c. Cu 2+(aq) + NaOH (aq) Cu(OH) 2(s) + Na +(aq) Turquoise colored precipitate 1d. Cu(OH) 2(s) + 2H +(aq) 2H 2 O(l) + Cu 2+(aq) Solution turned transparent 1e. Cu(OH) 2(s) CuO (s) + H 2 O (l) White precipitate, clear solution 2a. CuSO 4(s) * 5H 2 O (l) CuSO 4(s) + 5H 2 O (l) Blue solid turned white 2b. CuSO 4(s) + 5H 2 O (l) CuSO 4(s) * 5H 2 O (l) White solid turned blue 3a. Fe (s) + CuSO 4(aq) FeSO 4(aq) + Cu (s) Submerged part of nail turned copper color 4a. CuCO 3(s) + Ca(OH) 2(s) + H 2 SO 4(aq) CaCO 3(s) + Cu 2+(aq)
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Unformatted text preview: + H 2 O (l) + SO 42-(aq) Turns into clear bright blue. Limewater indicates CO 2 4b. CuCO 3(s) CuO(s) + CO 2(g) Powder turned black. Limewater indicates CO 2 4c. 2CuO (s) + C (s) 2Cu (s) + CO 2(g) Limewater indicates CO 2 Questions #2a. What chemical property is shared by copper oxide, copper hydroxide, and copper carbonate? They all react with hydrosulfuric acid. #2b. What evidence do you have that the blue color of a copper sulfate solution is due to the Cu 2+ ion? The Cu 2+ ion is also blue. #2c. What chemical test could you use to distinguish between copper sulfate pentahydrate and copper carbonate, both of which are blue solids?...
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5 - + H 2 O (l) + SO 42-(aq) Turns into clear bright blue....

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