4a.Lec05E3W10 - E3: Redox: Transferring Electrons Session...

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Unformatted text preview: E3: Redox: Transferring Electrons Session 1: Two Hour Lab Agenda* Complete Part 1B (Part 1A done in lecture) Complete Part 2A Write-up Team Report for Parts 1 and 2A * See Student Information Sheet on Ctools under Resources Experiments. Session 2: Three Hour Lab Agenda Complete Parts 2B and 3 Background Information: Redox Redox = oxidation-reduction reactions Redox reactions involve electron transfer . Loss of electrons ( LEO ) = oxidation Background information: Redox terminology LEO GER the lion says Gain of electrons ( GER ) = reduction 1A VIIIA 1 H 1s 1 IIA IIIA IVA VA VIA VIIA 2 He 1s 2 3 Li 2s 1 4 Be 2s 2 5 B 2s 2 2p 1 6 C 2s 2 2p 2 7 N 2s 2 2p 3 8 O 2s 2 2p 4 9 F 2s 2 2p 5 1 0 Ne 2s 2 2p 6 1 1 Na 3s 1 1 2 Mg 3s 2 IIIB IVB VB VIB VIIBVIIIB ! VIIIB IB IIB 1 3 Al 3s 2 3p 1 1 4 Si 3s 2 3p 2 1 5 P 3s 2 3p 3 1 6 S 3s 2 3p 4 1 7 Cl 3s 2 3p 5 1 8 Ar 3s 2 3p 6 1 9 K 4s 1 2 0 Ca 4s 2 2 1 Sc 3d 1 4s 2 2 2 Ti 3d 2 4s 2 2 3 V 3d 3 4s 2 2 4 Cr 3d 5 4s 1 2 5 Mn 3d 5 4s 2 2 6 Fe 3d 6 4s 2 2 7 Co 3d 7 4s 2 2 8 Ni 3d 8 4s 2 2 9 Cu 3d 1 0 4s 1 3 0 Zn 3d 1 0 4s 2 3 1 Ga 4s 2 4p 1 3 2 Ge 4s 2 4p 2 3 3 As 4s 2 4p 3 3 4 Se 4s 2 4p 4 3 5 Br 4s 2 4p 5 3 6 Kr 4s 2 4p 6 3 7 Rb 5s 1 3 8 Sr 5s 2 3 9 Y 4d 1 5s 2 4 0 Zr 4d 2 5s 2 4 1 Nb 4d 3 5s 2 4 2 Mo 4d 5 5s 1 4 3 Tc 4d 5 5s 2 4 4 Ru 4d 7 5s 1 4 5 Rh 4d 8 5s 1 4 6 Pd 4d 10 4 7 Ag 4d 1 0 5s 1 4 8 Cd 4d 1 0 5s 2 4 9 In 5s 2 5p 1 5 0 Sn 5s 2 5p 2 5 1 Sb 5s 2 5p 3 5 2 Te 5s 2 5p 4 5 3 I 5s 2 5p 5 5 4 Xe 5s 2 5p 6 5 5 Cs 6s 1 5 6 Ba 6s 2 5 7 La* 5d 1 6s 2 7 2 Hf 5d 2 6s 2 7 3 Ta 5d 3 6s 2 7 4 W 5d 4 6s 2 7 5 Re 5d 5 6s 2 7 6 Os 5d 6 6s 2 7 7 Ir 5d 7 6s 2 7 8 Pt 5d 9 6s 1 7 9 Au 5d 1 0 6s 1 8 0 Hg 5d 1 0 6s 2 8 1 Tl 6s 2 6p 1 8 2 Pb 6s 2 6p 2 8 3 Bi 6s 2 6p 3 8 4 Po 6s 2 6p 4 8 5 At 6s 2 6p 5 8 6 Rn 6s 2 6p 6 8 7 Fr 7s 1 8 8 Ra 7s 2 8 9 Ac # 6d 1 7s 2 104 + 6d 2 7s 2 105 + 6d 3 7s 2 106 + 6d 4 7s 2 107 + 6d 5 7s 2 108 + 6d 6 7s 2 109 + 6d 7 7s 2 + Element synthesized, but no official name assigned Background Information: Redox Metals lose electrons Non-metals gain electrons ( LEO ) GER) Redox Reactions 2 Na + Cl 2 2 NaCl + energy LEO GER Redox Reactions 2 Na (s) + Cl 2 (g) 2 NaCl (s) Involve oxidation AND reduction Reactants change charge (oxidation state) . Gain of es = reduction (Cl Cl - in NaCl) Lose of es = oxidation (Na Na + in NaCl) Dont Forget the Lyrics! Oxidation and reduction You cant have one! Go together like a brother! horse and carriage Let me tell you You cant have none! You cant have one ______ ___ _____! without the other 2 Na + Cl 2 2 Na + + 2 Cl- Oxidation Reduction 2 ( ) ( ) ( > in oxidation #) ( < in oxidation #) Na Na+ + e- Cl 2 + 2e- 2Cl- Half rxns always written to show electron GAIN ....
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This note was uploaded on 04/07/2010 for the course PSYCH 123 taught by Professor 123 during the Spring '10 term at University of Michigan.

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4a.Lec05E3W10 - E3: Redox: Transferring Electrons Session...

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