alleryStart learning →What is the pH of a buffer of 0.05 M NaF and 0.015 M HF (Ka = 7.2 x 10^-4)?
A2.62
B3.14
C3.67
D4.67
Answer & Solution
Correct answer: C. 3.67
pKa = 3.1427 and log(0.05/0.015) = 0.5224, so pH is about 3.67.
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