-In this experiment, KMnO4 is the titrant and oxalic acid is the analyte. Here, potassium permanganate is the oxidizing agent and oxalic acid is the reducing agent. The reaction between potassium permanganate and oxalic acid is carried out in an acidic medium because permanganate ion in the acidic medium is a very strong oxidizing agent. Acidity is introduced by adding dil. H2SO4.
-No indicators are used to determine the endpoint, because KMnO4  is a self-indicator. Permanganate (MnO4-) ion has a dark purple colour. In an acidic medium, MnO4- is reduced to colorless manganous (Mn2+) ions. On reaching the end point, the addition of the last single drop of permanganate imparts a light purple colour to the solution.


  • Determine the strength of potassium permanganate with a standard oxalic acid solution.


  •  Redox  Titration.

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