39. Решение задачки по химии №45

5. A 0.8500 g sample consisting of a mixture of sodium hydrogen phosphate and sodium dihydrogen phosphate is dissolved in a 100 ml measuring flask in a 0.2 N solution of hydrochloric acid; 25 ml of this solution is titrated with 40 0.1 N sodium hydroxide solution for phenolphthalein. Calculate the percentage content of salts.

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