250 ml of a hydrofluoric acid solution of unknown, Chemistry

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250 ml of a hydrofluoric acid solution of unknown

25.0 mL of a hydrofluoric acid solution of unknown concentration is titrated with 0.200 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 3.00. What was the concentration of the original hydrofluoric acid solution. (Ka(HF) = 7.1 x 10-4)

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Chemistry: 250 ml of a hydrofluoric acid solution of unknown

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