(3) 30.00 mL of 0.085 M Hydrofluoric acid (HF) is titrated with 0.10 M NaOH. What...

Question

Question

(3) 30.00 mL of 0.085 M Hydrofluoric acid (HF) is titrated with 0.10 M NaOH.

What is the pH of the acid solution before any base is added? (Ans: pH = 2.11)

What is the pH of the titration mixture at half the equivalence point? (Ans: pH = 3.35)

What is the pH of the titration mixture at the equivalence point? (Ans: pH = 7.92)

What is the pH of the mixture after 40.00 mL of base are added? (Ans: pH = 12.32)

One last part of my question: Does the Ka have to be provided or can you calculate it?

Can you provide complete answers worked out so I can learn the idea. Thanks!

Answer 1

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