Q
QuestionChemistry

Explain how to find pKa from a titration curve.
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Answer

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Step 1
: Identify the equivalence point in the titration curve

The equivalence point is the point in a titration where the amount of acid (or base) added is exactly stoichiometrically equivalent to the amount of base (or acid) initially present. At the equivalence point, the pH of the solution will change dramatically over a small volume change of the titrant.

Step 2
: Determine the pH at the equivalence point

For a weak acid being titrated with a strong base, the pH at the equivalence point is given by the formula:

Final Answer

For a weak acid being titrated with a strong base, the pH at the equivalence point is given by the formula: