Calculate the extent of hydrolysis \& the \( \mathrm{pH} \) of \( 0...

Calculate the extent of hydrolysis \& the \( \mathrm{pH} \) of \( 0.02 \mathrm{M} \mathrm{CH}_{3} \mathrm{COONH}_{4} \)
\[
\left[\mathrm{K}_{\mathrm{b}}\left(\mathrm{NH}_{3}\right)=1.8 \times 10^{-5}, \mathrm{~K}_{\mathrm{a}}\left(\mathrm{CH}_{3} \mathrm{COOH}\right)=1.8 \times 10^{-5}\right]
\]
\( \mathrm{P} \)
W