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OpenStudy (anonymous):
Calculate the pH of a buffer solution that is 0.250 M in formic acid, HCOOH, and 0.200 M in formate ion, HCOO–. The ionization constant for formic acid is 1.80 ´ 10–4.
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OpenStudy (jfraser):
use the Henderson-Hasselbach equation:\[pH = pK_A + \log(\frac{[A^{-1}]}{[HA]})\]
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