4. a. Find the molecular structure of Zoloft. Write a reaction for Zoloft in water. b. Is Zoloft an acid? Or base? How do you know? c. If a buffered solution of Zoloft is 72% protonated at a pH=8.75, what is the pKa, pKb, Ka, Kb, and pOH? d. If the Zoloft buffered solution was at a pH=10.64, would the Henderson Hasselbalch equation be suitable to calculated a ratio of [:????] [????????]? Prove your answer.