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06-02-2024
Chemistry

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A 50.00 mL of 0.1000 M calcium nitrate is added to a 1.000 g impure sample containing NaF. After the calcium fluoride precipitate has been filtered and collected, the excess Ca²⁺ is titrated with EDTA (Ca²⁺ reacts with EDTA in 1;1 stoichiometry). This titration requires 24.20 mL of 0.0500 M EDTA. Calculate the percentage of Naf in the sample.

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