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Redox Titration

Properties of Umass Boston Redox Titration Properties of Umass Boston Redox Titration Redox Titration is based on the Redox reaction ( oxidation -reduction) between analyte and titrant. Ce4+ + Fe2+ Ce3+ + Fe3+ Properties of Umass Boston Position of the end point Properties of Umass Boston Determine the end point Indicator electrode Redox indicators the indicator has different color at reduction and oxidation state. Non Redox indicator change color when excess amount of titrant exists, Starch changes to deep blue color when excess amount I2 remains Properties of Umass Boston Redox indicator Properties of Umass Boston Redox indicators The indicator potential transition range should overlap the steep part of the Titration curve Properties of Umass Boston Adjustment of oxidation state Sometimes the oxidation states of analytes need to be adjusted before Titration oxidants need to be removed.

different color at reduction and oxidation state. • Non redox indicator – change color when excess amount of titrant exists, e.g. Starch changes to deep blue color when excess amount I. 2. remains

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