Chemistry Practice Problems Weak Acid Strong Base Titrations Practice Problems Solution: In a titration, 25.00 mL of aqueous hydrofluoric a...

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Solution: In a titration, 25.00 mL of aqueous hydrofluoric acid requires the addition of 30.00 mL of 0.400 M NaOH to reach the equivalence (stoichiometric) point. What will be the corresponding pH? Ka (HF) = 6.76 × 10 -4 . (a) 9.12 (b) 8.25 (c) 5.75 (d) 7.00 (e) 1.74

Problem

In a titration, 25.00 mL of aqueous hydrofluoric acid requires the addition of 30.00 mL of 0.400 M NaOH to reach the equivalence (stoichiometric) point. What will be the corresponding pH? Ka (HF) = 6.76 × 10 -4 .

(a) 9.12

(b) 8.25

(c) 5.75

(d) 7.00

(e) 1.74