buffer region over titration equivalence point Ecell percent titration Unlike acid/base titrations, we really can’t do much with this region. While some Fe3+must be present, we can only guess what the concentration is. No Ce4+or Ce3+ are present, so we don’t have a complete reaction. Between 0% and 100% titration, we can use the Nernst equation for Fe2+/Fe3+. EFe= 0.771 - 0.0592 log There is no significant level of Ce4+to work
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