Preparation and Standardization of 0.05 M Potassium Iodate
Preparation: Weigh accurately 10.7 g of
potassium iodate, previously dried at 110° to constant weight, in sufficient water to produce 1000 ml. Standardise the solution in the following manner.
Standardization: Dilute 25.0 ml of the solution to 100 ml with water and to 20.0 ml of this solution add 2 g of potassium iodide and 10 ml of 1 M sulphuric acid. Titrate with 0.1 M sodium thiosulphate using 1 ml of starch solution, added towards the end of the titration, as indicator and continue to the absence of the blue-starch-iodine complex.
1 ml of 0.1 M sodium thiosulphate is equivalent to 0.003566 g of Potassium Iodate