If 0.259 mol of a monoprotic weak acid (pKa = 4.03) are dissolved in water and...
If 0.259 mol of a monoprotic weak acid (pKa = 4.03) are dissolved in water and titrated with NaOH, what will the pH be at the half-equivalence point? Report your answer to the hundredths place.
Homework Answers
Let the monoprotic acid be HA.
At half equivalence point [HA] = [A-]
Therefore, ka = [H3O+]
Hence, at half equivalence point pH = pKa of acid
So, pH at half equivalence point will be 4.03.
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