250 ml of a hydrofluoric acid solution of unknown

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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)

Reference no: EM13641675

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