20.0 mL of a .500 M solution of hydrofluoric acid is titrated with .200 M NaOH t

Question

20.0 mL of a .500 M solution of hydrofluoric acid is titrated with .200 M NaOH to the equivalence point. The Ka of HF is 7.2x-4

(1)What volume of NaOH will be needed to completely neutralize the acid?

(2.)What is the pH before any NaOH is added?

(3)What is the pH when 15.0 mL of .200 M NaOH is added to the acid in the flask?

(4)What is the pH when 25.0 mLof .200 M NaOH is added to the flask?

(5)What is the pH at the equivalence point?

(6) Sketch a titration curve for the titration described above

Explanation / Answer

20.0 mL of a .500 M solution of hydrofluoric acid is titrated with .200 M NaOH t

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