Redox titration lab - permanganate and iron (II) under acidic conditions

A solution of potassium permanganate of unknown concentration is used to titrate iron (II) sulfate heptahydrate FeSO4*7H2O in sulfuric acid.  Phosphoric acid is used to mask the color of the iron (III) ions produced.  Data for volumes and mass of iron compound is listed at the end of the video.

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