Hydrofluoric Acid (HF) Has a K_a Value of 7

question 83

Essay

Hydrofluoric acid (HF) has a K_a value of 7.2 × 10^-4.
a. 0.250 mol of F^- ions (in the form of NaF) are added to 1.00 L of 0.100 mol L^-1 aqueous HF. Calculate the resulting pH.
b. To the solution produced in (a) is added 10.0 mL of 5.00 mol L^-1 NaOH. Calculate the resulting pH.

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