18. Решение задачки по химии №1

45. A 0.1032 g sample of Na2CO3 was treated with 50.00 ml of 0.09496 M HCl. The excess acid was titrated with 24.80 ml of 0.1 M NaOH (k=1.298) against methyl orange. Calculate the mass fraction (%) of indifferent impurities in the sample.

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