21. Solving a chemistry problem
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3. A sample of bleaching lime weighing 3.359 g was placed in a volumetric flask with a capacity of 250.0 ml and water was added to the mark. The iodometric titration of 25.00 ml of the resulting solution required 18.29 ml of thiosulfate solution with T(Na2S2O3*5H2O) = 0.02453. Calculate the mass fraction (%) of active chlorine in bleaching lime. Answer: 19.08 %
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