Textbook Problem

The local anaesthetic novocaine is the hydrogen chloride salt of an organic base, procaine.

${\text{C}}_{\text{13}}{\text{H}}_{\text{20}}{\text{N}}_{\text{2}}{\text{O}}_{\text{2}}\text{(aq) + HCl(aq) }\to {\text{ [HC}}_{\text{13}}{\text{H}}_{\text{20}}{\text{N}}_{\text{2}}{\text{O}}_{\text{2}}{\text{]}}^{\text{+}}{\text{Cl}}^{-}\text{(aq)}$

The pK_a for novocaine is 8.85. What is the pH of a 0.0015M solution of novocaine?