4. Explain why pH = pKa when the "half-way point" (half-way to the equivalence point) is Henderson-Hasselbalch equation to reached in a weak acid titration. Hint: you can use the help explain.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.