Question

14) What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25.0 mL of aqueous HF requires 30.0 mL of 0.300 M NaOH? Ka HF = 6.76 x 10-4 a. 1.81 b. 5.81 c. 12.19 d. 8.19

          14) What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25.0 mL of aqueous HF requires 30.0 mL of 0.300 M NaOH? Ka HF = 6.76 x 10-4
a. 1.81
b. 5.81
c. 12.19
d. 8.19

Added by Joel W.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert David Collins

05/02/2024

Step 1

The concentration of \( \mathrm{NaOH} \) is given as \( 0.300 \, \mathrm{M} \), and the volume used is \( 30.0 \, \mathrm{mL} \) or \( 0.0300 \, \mathrm{L} \). The moles of \( \mathrm{NaOH} \) can be calculated using the formula: \[ \text{moles} = Show more…

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