After doing the problem I am
still unsure about my assumptions based on the premise that...
5) We employ 2% NaCl in the electrolyte of the Oz/Fe cell. In this case, a concern is the oxidation of cl-ions to chlorine gas (201- → Cl2 + 2e -) instead of oxidation (corrosion) of Fe (Fe → Fe2+ + 2e-). Indeed, in cathodic protection of ships and oil platforms on the sea, this reaction is the source of electrons and it occurs at the auxiliary electrode. Explain why this reaction does not occur in our experiment. Solution: Ecell = Doz - ØFe => 401 –(-0.440) => 0.841 Eceu = Boz – a => 401 – (-1.33) => 1.731 The more positive Ecell gets, the more - AG gets. This means its more spontaneous and more likely to happen.