58. Решение задачи по химии №006 006

4. 200 ml of solution was prepared from technical sodium sulfite weighing 0.5600 g. For titration of 20 ml of solution, 16.20 ml of iodine solution was used, having T (I2 / As2O3) = 0.002473. Determine the mass fraction (%) of Na2SO3 in the sample.

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