Preparation and Standardization of 0.05 M Potassium Iodate : Pharmaguideline
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  • Sep 25, 2010

    Preparation and Standardization of 0.05 M Potassium Iodate

    Preparation and standardisation of 0.05 M Potassium Iodate using Sodium Thiosulphate and Starch solution as indicator.

    Potassium Iodate Solution Preparation

    • Weigh accurately 10.7 g of potassium iodate, previously dried at 110°C to constant weight, in sufficient water to produce 1000 ml. 
    • Standardize the solution in the following manner.

    Potassium Iodate Solution Standardization

    • Dilute 25.0 ml of the solution to 100 ml with water.
    • To 20.0 ml of this solution add 2 g of potassium iodide and 10 ml of 1M sulphuric acid. 
    • Titrate with 0.1 M sodium thiosulphate using 1 ml of starch solution, added towards the end of the titration, as an indicator.
    • 1 ml of 0.1 M sodium thiosulphate is equivalent to 0.003566 g of KIO3.
    Also see: Determination of Shelf Life of Solutions in Laboratory

    1 comment: Post Yours! Read Comment Policy ▼

    1. sir
      why we are not including the dilution factor 100/20 in the standardisation calculation for KIO3

      ReplyDelete

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