122. Solving a chemistry problem
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122. Solving a chemistry problem
From a sample of 1.4000 g of sulfate, 250 ml of a solution were prepared. 25 ml of this solution was treated with 25 ml of 0.1 N. BaCl2 solution (fe=1/2), the precipitate was filtered off. For titration of the filtrate, 10.00 ml of 0.1 N. complexone III solution (fe = 1/2). What percentage of sulfate ions did the sample contain?
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