chem quiz 1 - Cu 2 Fe 2 Hg 2 2 Co 3 2 Given the following...

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+ 0.27 V + 0.56 V + 4.27 V + 0.95 V + 1.51 V - 1.18 V + 1.51 V + 1.70 V Chem 6C Name: Hoeger C02 Quiz #1 (total of 40 points) 1. Given the following half-reactions: i. Cu 2+ (aq) + 2e - barb2right Cu (s) E˚ = + 0.34 V ii. Fe 2+ (aq) + 2e - barb2right Fe (s) E˚ = - 0.44 V iii. Hg 2 2+ (aq) + 2e - barb2right 2 Hg (l) E˚ = + 0.79 V iv. Co 3+ (aq) + e - barb2right Co 2+ (aq) E˚ = + 1.81 V a. (6) Write the overall reaction of the couple that makes the best battery. What is the cell of this battery? b. (6) Draw the cell diagram for this battery. c. (2) Which of the following has the strongest reducing power? (Circle the correct answer) Cu, Fe, Hg, Co 2+ d. (2) Which of the following is the best oxidizing agent? (circle the correct answer)
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Unformatted text preview: Cu 2+ , Fe 2+ , Hg 2 2+ , Co 3+ 2. Given the following Latimer Diagram: MnO 4-MnO 4 2-MnO 4 3-MnO 2 Mn 3+ Mn 2+ Mn (6) Write the disproportionation reaction of Mn3+. What is the E˚ disproportionation ? (2) Will Mn 3+ disproportionate? 3. Given, Ti 2+ (aq) + 2e-b Ti (s) E˚ = -1.63V And Ti 3+ (aq) + 1e-b Ti 2+ (aq) E˚ = -0.37V (8) What is the standard potential for the half-reaction: Ti 3+ (aq) + 3e-b Ti (s) (Hint: ΔG ˚ = -nFE˚, where F = 9.65 x 10 4 C • mol-1 ) 4. (8) Balance the following skeletal reaction in BASIC conditions: MnO 4--(aq) + H 2 SO3 (aq) b Mn 2+ (aq) + HSO 4--(aq)...
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