Question

How to standrize 0.1 N sodium thiosulphate solution?

Answer 1

Procedure to follow:

Pour 80 mL of freshly boiled, distilled water into Erlenmayer flask (or better - flask with glass stopper).Add 2 g of (iodate free) potassium iodide.Add 25 mL of 1M hydrochloric acid solution and swirl the soltion.Close the flask and left it in a dark place for a 5 minutes