57. Решение задачи по химии №005 724

7. To determine the concentration of the working solution of sodium arsenite, a sample of 1.2860 g of a standard steel sample containing 1.22% manganese was taken. After appropriate treatment for titration of the resulting manganese acid, 22.4 ml of the working solution was consumed. Calculate the titer of the working solution of arsenite by manganese.

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