3. Predict the pH and draw a structure for the following analgesics: \begin{tabular}{|l|l|l|} \hline & pH:Chooseacid,neutral,orbase & Structure \\ \hline Aspirin & & X - See above \\ \hline Acetominophen & & \\ \hline Ibuprofen & & \\ \hline Buffered Aspirin & & \\ \hline 0.15\% Salicylic acid & & \\ \hline Caffeine & & \\ \hline \end{tabular}