11. Solution to Chemistry Problem

11. Solution to Chemistry Problem

4. Calculate the concentration of the solution (mg/ml) containing Fe3 if acetone, ammonium thiocyanate and water were added to 1 ml of the analyzed solution to make 100 ml. Photometry was carried out in a cuvette with l=2 cm at 480 nm. The optical density of the solution was 0.75, the molar absorption coefficient under these conditions was 14000.

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