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2. For the titration of 250 mL of 0.200 mol L-1 HF(Ka = 6.3 x 10-4) with a solution of 1.00 M NaOH: a) What

2. For the titration of 250 mL of 0.200 mol L-1 HF(Ka = 6.3 x 10-4) with a solution of 1.00 M NaOH:

a) What is the pH at the half-equivalence point?

b) What is the pH at the equivalence point?

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