Chemical Analysis
Posted: Wed Dec 15, 2021 10:51 am
Chemical Analysis
4. Using starch solution as an indicator, the iodine solution is then titrated with sodium thiosulphate solution to find the mass of iodine in the sample. The balanced equation for the reaction is shown. 2Na S,Oxay + 15w 2Nal., +Na 5 Osta In an analysis of seaweed, 16.1 cm² of 0.025 mol + sodium thiosulphate solution was required to reach the end-point. Calculate the mass of iodine present in the seaweed sample, in grams.
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