Chemistry

Problem

An aqueous solution is prepared by dissolving aniline,

\mathrm{C_6H_5NH_2}

, to make a

0.25\,\text{M}

solution at

25\,^{\circ}\mathrm{C}

. The base-dissociation constant for aniline is

K_b = 3.8\times10^{-10}

. What is the pH of the solution? a) 9.59 b) 8.50 c) 9.00 d) 9.29