0722. Solving a chemistry problem
125. When determining iron in a sample of waste water with a volume of 200.0 ml, it was oxidized to the trivalent state, precipitated with ammonia, the precipitate of iron (III) hydroxide was separated from the solution and, after dissolution in hydrochloric acid, titrated with 5.14 ml of 0.005505 M EDTA solution. Calculate the molar concentration of iron in water.
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