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What Is the Approximate PH at the Equivalence Point of a Weak

Question 42

Multiple Choice

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires 30.00 mL of 0.400 mol L-1 NaOH(aq) ? Ka = 6.76 × 10-4 for HF.


A) 1.74
B) 5.75
C) 8.25
D) 12.26

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