100ml volumetric flask and add deionized water to the

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100ml volumetric flask, and add deionized water to the flask until the bottom of the meniscus coincides with the etched lines on the flask. Add the last 0.5ml with a medicine dropper. Insert a stopper in the flask, and mix the solution thoroughly. 4) Pour over the diluted bleach solution into the 150ml beaker. Use a small amount of the bleach solution to rinse the 25ml volumetric flask. Measure out 25.00mL into the 25mL Volumetric flask. Fill the flask only to the etched line on the flask. Then add the last of the 0.5mL with a medicine dropper. 5) Put the 25ml portion of the diluted bleach back into the 250ml flask. Rinse the 25ml of volumetric flask with some Deionized water and add to the 250ml flask. 6) Weigh out 2 grams of KI, and add it to the 250ml flask, and then add 20ml of DI water to the flask by using the 50ml graduated cylinder. Swirl it to mix and add 10ml of 0.5M H 2 SO 4 solution. The solution in the 250ml flask will turn brown/yellow/red color. 7) Then place the flask under the buret with the tip of the buret in the flask, then place a piece of white paper under the flask.
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