problem_set_chapter_19 -key

problem_set_chapter_19 -key - 1. Given the following...

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1. Given the following notation for an electrochemical cell Pt(s) | H 2 (g) | H + (aq) || Ag + (aq) | Ag(s), what is the balanced overall (net) cell reaction? a. 2H + (aq) + 2Ag + (aq) H 2 (g) + 2Ag(s) b. H 2 (g) + 2Ag(s) H + (aq) + 2Ag + (aq) c. 2H + (aq) + 2Ag(s) H 2 (g) + 2Ag + (aq) d. H 2 (g) + Ag + (aq) H + (aq) + Ag(s) E. H 2 (g) + 2Ag + (aq) 2H + (aq) + 2Ag(s) 2. Which choice lists all of the following species that can oxidize H 2 O to O 2 (g) under standard-state conditions? (2H 2 O(l) O 2 (g) + 4H + (aq) + 4e - ) MnO 4 - (aq), Cl 2 (g), Pb 2+ (aq), Cl - (aq), Ag + (aq) a. Cl - (aq) only b. Cl 2 (g) only c. Pb 2+ (aq) and Ag + (aq) d. Cl - (aq) andMnO 4 - (aq) E. E.MnO 4 - (aq) and Cl 2 (g) 3. Consider the following standard reduction potentials in acid solution: The strongest oxidizing agent listed above is a. Cr 3+ . b. Cr. c. C.Mn 2+ . d. Co 2+ . E. E.MnO 4 - . 4. A battery is constructed by placing copper and lead electrodes in contact with 1.0 molar CuSO 4 (aq) and Pb(NO 3 ) 2 (aq) solutions, respectively. If sulfuric acid is then added to the Pb(NO 3 ) 2 solution, thereby forming a precipitate of PbSO 4 , what will happen to the cell potential? The cell potential will increase. 5. A current of 2.50 A was passed through an electrolytic cell containing molten CaCl 2 for 4.50 hours. How many moles of calcium metal should be deposited? a. 5.83 × 10 -5 mol B. 0.210 mol c. 0.420 mol d. 0.840 mol e. 1.95 × 10 9 mol
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6. How many grams of nickel would be electroplated by passing a constant current of 7.2 A through a solution of NiSO 4 for 90.0 min? a. 0.20 g
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problem_set_chapter_19 -key - 1. Given the following...

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