Transcription of Experiment 8 Redox Titrations
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Experiment 8 Redox Titrations
Experiment 8 Redox Titrations Potassium permanganate, KMnO4, is a strong oxidizing agent. Permanganate, MnO4-, is an intense dark purple color. Reduction of purple permanganate ion to the colorless Mn+2 ion, the solution will turn from dark purple to a faint pink color at the equivalence point. No additional indicator is needed for this titration. The reduction of permanganate requires strong acidic conditions. In this Experiment , permanganate will be reduced by oxalate, C2O42- in acidic conditions. Oxalate reacts very slowly at room temperature so the solutions are titrated hot to make the procedure practical. The unbalance Redox reaction is shown below. MnO4- + C2O42- Mn2+ + CO2 (acidic solution) In part I of this Experiment , a potassium permanganate solution will be standardized against a sample of potassium oxalate.
Experiment 8 – Redox Titrations Potassium permanganate, KMnO 4, is a strong oxidizing agent.Permanganate, MnO 4-, is an intense dark purple color. Reduction of purple permanganate ion to the colorless Mn+2 ion, the solution will turn from dark purple to …
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