A 25.0 mL sample of 0.150 M hydrofluoric acid is titrated with a 0.150 M NaOH solution.What is the pH after 26.0 mL of base is added? The Ka of hydrofluoric acid is 6.8 × 10-4.
A) 2.54
B) 11.47
C) 7.00
D) 3.15
E) 3.18
Correct Answer:
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