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how to determine concentration of iron by EDTA titration

how to determine concentration of iron by EDTA titration

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Answer #1

Concentration of iron can be determined by using complexometric titration. EDTA can form complex with iron ion at pH 2-4. Xylenol orange is the suitable indicator for this titration.

First EDTA is standardized by using standard Zinc(II) ion solution and then iron ion solution is titrated with standard EDTA solution.

From the volume of titrant required to reach the end we can calculate the concentration of iron as follows.

Concentration of iron ion = (concentration of EDTA*volume of EDTA)/ Volume of iron ion solution.

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