Question

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3. Consider a voltaic cell constructed from the following redox couples and make the following predictions about what would occur if you ran this cell under standard conditions. couple reduction half reaction reduction potential Ere Pb2+ Pb P b2+ + 2 e <==> Pb - 0.13 volts Ce4+, Ce3+ Pt Ce4+ + e <==> Ce+ + 1.44 volts (a) Write the anode, cathode and overall cell reactions. Anode Half Reaction: Cathode Half Reaction: Overall Cell Reaction: (b) Calculate the ideal cell voltage, E.cell, for this voltaic cell.

Answer 1

Soln. ) consider a voltaic cell construited from the following Redox couples and make the following predictions about what would occur if you nan this cell under standard conditions. Couple Reduction half cell Reduction Potential Pb2+1 P6 1624 f ze pb 2013 volts Ce 4 / 3 (63* 1Pt Centfe e st +1.44 volts To make a working vottait cell are will be reduction and he will be oxidation and combination of this must be as that Eren would be positive. I for this - At anode coxiolation Galf cell) Pb pb24tze E rde = toil3 volts At cathode (By changing reaction (Reduction cette - Ce3+ E +144160 4C Revesting cell) halfeel) Sign up & ° alsockowige) To get overall reaction multiply reduction half cell .by 2 and add it in oxidation half cell. So, Net Cell Reachem 1 Pb +2ce4 Pb2+ + 2634 19 Feu - (0:13 +9:44) volte Ecell = +1.57 volts nasce Anoole helf Reaction: pb P 62+28 Cathoole half Reachém! Ce4tte Ce 3+ Overall cell reaction: Pb +26e4+ + 8624+ 263+ b) Ecell ů equals to +1.57 volts Mence,