C. (20 points) Acid-base equilibria. A sample of acid is titrated with 0.1Mstrong base (NaOH) to yield the titration curve shown (a) How many mL of strong base (to an

accuracy of +/-3mL) must be addedto reach the stoichiometric point? (b) Roughly (give 1 significant figure) what is the pH at the stoichiometricpoint (c) If your result is not neutral (pH=7), explain why not. What is thesignificance of the value? (d) What is the pka (to accuracy of +/- 0.5) for this acid? Explain how you got your answer for full credit.

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