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Define Reagents Estimation of Iron in the Solution?
1. Conc. sulphuric acid (iron free)
2. Conc. potassium permanganate solution
3. Saturated potassium persulphate (K2S2O3) solution:
Shake 7-8 g of reagent grade iron free potassium persulphate with 100 ml of water in a glass stoppered bottle. Compensate for loss by decomposition. Shake briefly before use. Keep the reagent in the refrigerator.
4. 3N potassium thiocyanate solution:
Dissolve 146 g of potassium thiocyanate in 480 ml ofdistilled water. Filter ifturbid. Add 20 ml of acetone to improve keeping quality.
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