A 0.200 M aqueous solution of ammonia,

CHEMISTRY · Multi-part · AP · Chemistry · Acids and Bases · Acids and Bases

Problem

NH_3

, is prepared at 25 °C. The base-dissociation constant for ammonia is

K_b = 1.8\times10^{-5}

. (a) Determine the percent ionization of

NH_3

in the solution. (b) Calculate the equilibrium concentrations, in

\text{mol L}^{-1}

, of

NH_3

NH_{4}^{+}

, and

OH^{-}

. (c) Using your answers from part (b), determine the pH of the solution.