99. Решение задачки по химии №113

6. Calculate the concentration of the solution. containing Fe(III), according to the following data and conditions of photometric determination. Acetone, ammonium thiocyanate solution and water up to 100 ml were added to 1.0 ml of solution. Photometry was carried out in a 2 cm cuvette. The optical density (at 480 nm) of the colored solution was 0.75. The molar light absorption coefficient under these conditions is 14000 l/mol*cm.

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