Chapter 18, Problem 128E

Aniline, C₆H₅NH₂, is an important organic base used in the manufacture of dyes. It has $K_{\text{b}}\text{= 4}{\text{.3 × 10}}^{-10}$ . In a certain manufacturing process, it is necessary to keep the concentration of ${\text{C}}_6{\text{H}}_5{\text{NH}}_3^{+}$ (aniline’s conjugate acid, the anilinium ion) below $\text{1}{\text{.0 × 10}}^{-9}$ in a solution that is 0.10 M in aniline. Find the concentration of NaOH required for this process.