An aqueous solution is prepared by dissolving aniline,

CHEMISTRY · Single correct · AP · Chemistry · Acids and Bases · Acids and Bases

Problem

\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