37. Решение задачи по химии №003 717

27. 50.0 ml of 0.0949 N HCl was added to a sample of Na2CO3 weighing 0.1032 g. The acid residue was titrated with 24.8 ml of 0.1298 M NaOH against methyl orange. Calculate the mass fraction (%) of indifferent impurities in the sample.

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