Chemistry

Problem

Fifty millilitres of 0.10 M

\text{NH}_3

are mixed with 50 mL of 0.10 M

\text{NH}_4\text{Cl}

. After the mixture is prepared, 10.0 mL of 0.20 M NaOH are added. What is the pH of the final solution? (For

\text{NH}_4^+

K_a = 5.6\times10^{-10}

.) a)

9.47

9.25

9.62

8.88