ws9s08key - CH 302 Spring 2008 Worksheet 9 Half-reaction E...

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Unformatted text preview: CH 302 Spring 2008 Worksheet 9 Half-reaction E r (V) Li + (aq) + e Li(s) -3.05 Al 3+ (aq) + 3e Al(s) -1.68 TiO(s) + 2H + + 2e Ti(s) + H 2 O -1.31 Ti 3+ (aq) + 3e Ti(s) -1.21 Ni 2+ (aq) + 2e Ni(s) -0.25 CO 2 (g) + 2H + + 2e HCOOH(aq) -0.11 2H + (aq) + 2e H 2 (g) 0 SO 4 2 (aq) + 4H + + 2e 2H 2 O(l) + SO 2 (aq) +0.17 Cu 2+ (aq) + 2e Cu(s) +0.34 Fe 3+ (aq) + e Fe 2+ (aq) +0.77 NO 3 (aq) + 2H + (aq) +e NO 2 (g) + H 2 O(l) +0.80 Au 3+ (aq) + 3e Au(s) +1.52 Ag 2 O 3 (s) + 6H + + 4e 2Ag + (aq) + 3H 2 O +1.67 F 2 (g) + 2e 2F (aq) +2.87 For questions 1-5, determine whether, as written, the reaction is a battery (galvanic) or electrolytic. Balance the reaction and then indicate which species is receiving the electrons and the sign of the cell for that electrode. Note: These problems are harder than the problems on the next page. It was just convenient to put them here. It was just convenient to put them here....
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ws9s08key - CH 302 Spring 2008 Worksheet 9 Half-reaction E...

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