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y5 points each 1, Define a. Decant the terms b. Filtrate reactions you observe p

ID: 557330 • Letter: Y

Question

y5 points each 1, Define a. Decant the terms b. Filtrate reactions you observe performing the following Praq)-> Cu(OH)2(s)--> CuO(s)--> [Cu(HO)s]"(aq)-> Culs) Oxidizing Cu with HNO, solution a. Culs) 4 H,0 (aq)+2 NO laq)Cu(aq)+ 2 NO(g)+2HOU) Converting Cu(OH) b. CulOH)z (s, blue) Heat cuol, black)+ Ho ) [Cu(H2O)s]"(aq, blue) Dissolving Cuo with H2504s solution c. CuO (s, black) + 2 H,0. (aq) + 3 Holl)- 3. A student performing this experiment dissolved 0.49 g of Cu wire in HNO2. After performing the series reactions, the student isolated 0.38 g of Cu. Calculate the percent copper recovery by the student?

Explanation / Answer

1

a) Decant: The liquid that is poured out slowly without disturbing the sediments (precipitates, crystals etc) at the bottom of the beaker

b) filtrate: The Liquid that is collected after the solution is filtered through a filter paper, buchner funnel or a sintered crucible etc

c) supernatant: The liquid that stays over sediments when a solution is allowed to stand for a considerable period of time.