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Unformatted text preview: Version 005/AAABB Quiz 4 Copper cycle lyon (51215) 1 This print-out should have 9 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 1 2 3 4 5 6 7 AA AB AC AD BA BB BC 8 9 10 BACK NEXT BD CA CB CC CD blue = correct; red = incorrect; greenish- brown = already answered and E = enter. 001 10.0 points When copper metal is reduced, it (loses/gains) electrons. 1. Gains correct 2. Loses Explanation: Gains electrons. (Oil Rig) Oxidation is loss of electrons and reduction is gain of electrons. 002 10.0 points In the following question, assume that all aqueous compounds in the formula unit equa- tion are completely ionized. Identify the spectator ions in the following reaction. AgNO 3 (aq) + HCl(aq) HNO 3 (aq) + AgCl(s) 1. Ag + , NO- 3 2. H + , NO- 3 correct 3. There are no spectator ions. 4. H + , Cl- 5. Ag + , Cl- Explanation: The total ionic equation is Ag + + NO- 3 + H + + Cl- H + + NO- 3 + AgCl(s) The net ionic equation is Ag + + Cl- AgCl(s) The spectator ions are H + , NO- 3 . AgCl precipitates out of solution. 003 10.0 points In one of the reactions of the copper cycle, CuO is reacted with H 2 SO 4 . What type of reaction is this and what kind of reactant is CuO?...
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- Fall '08