post lab 13 - 2 Pb Zn 2 → Pb 2 Zn Zn/Zn 2(A Fe/Fe 2 Zn Fe...

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Chem1310 Name: Partner's Name: Section: I10 Date of Experiment Performed: 11/15/2006 Date of Report Prepared: 11/27/2006 Electrolysis Initial Final pH 6.43 11.3 [OH] 0 0.0019770 Time (min) 0 15 Observations clear solution rust colored solution ∆[OH] 0.001977 Voltaic cell emf = 0.83V Half Cell 1 Half Cell 2 Overall Reaction n ∆ε° exp(v) Electrodes/Ions Electrodes/Ions 0.34 -0.13 2 0.45 0.45 0.34 -0.41 2 0.55 0.55 0.34 0.77 2 0.53 0.53 -0.76 -0.13 2 0.36 0.36 -0.76 -0.41 2 0.2 0.2 -0.76 0.77 2 0.24 0.24 -0.41 0.77 2 0.07 0.07 Sample Equations (a,c,g) Cu reacting with Pb Cu w/ Graphite Fe w/ Graphite Section 4: Copper Concentration Cell emf (init.) .0219V emf (final) .0075V Anode Cathode ∆ε exp (v) ε ° literature ε ° literature Cu/Cu 2+ Pb/Pb 2+ (A) Pb + Cu 2+ Pb 2+ +Cu Cu/Cu 2+ Fe/Fe 2+ (A) Fe + Cu 2+ Fe 2+ +Cu Cu/Cu 2+ (A) Graphite/Fe 2+ Cu + Pt 2+ Cu 2+ +Pt Zn/Zn 2+ (A) Pb/Pb
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Unformatted text preview: 2+ Pb + Zn 2+ → Pb 2+ +Zn Zn/Zn 2+ (A) Fe/Fe 2+ Zn + Fe 2+ → Zn 2+ +Fe Zn/Zn 2+ (A) Graphite/Fe 2+ Zn + Pt 2+ → Zn 2+ +Pt Fe/Fe 2+ (A) Graphite/Fe 2+ Fe + Pt 2+ → Fe 2+ +Pt Diluted Cu(NO 3 ) 2 .1 M Cu(NO 3 ) 2 V E E E E C C n E C C Q cell cell cell cell r p cell r p 453 . * 2 0592 . ) log( * 0592 . 453 . 1 1 . 1 . = ° =-° =-= = = = V E E E E C C n E C C Q cell cell cell cell r p cell r p 533 . * 2 0592 . ) log( * 0592 . 533 . 1 1 . 1 . = ° =-° =-= = = = V E E E E n E C C Q cell cell cell cell cell r p 070 . * 2 0592 . * 0592 . 070 . 1 1 . 1 . = ° =-° =-= = = = ∆ε° lit(v) 0.47 0.75 0.43 0.63 0.35 1.53 1.18 C C r p ) log( *...
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This note was uploaded on 04/07/2008 for the course CHEM 1310 taught by Professor Cox during the Fall '08 term at Georgia Tech.

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post lab 13 - 2 Pb Zn 2 → Pb 2 Zn Zn/Zn 2(A Fe/Fe 2 Zn Fe...

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