Question

$K_a$ of $C{H}_{3}COOH$ is $1.8\times 10^{-5}$ and $K_b$ of $N{H}_{4}OH$ is $1.8\times 10^{-5}$ . The $pH$ of amonium acetate is ?

• A. $7.005$
• B. $4.75$
• C. $7$
• D. Between $6$ and $7$

Answer 1

Answer: (C)

$C{H}_{3}COON{H}_4$ is $W.A-W.B$
Type salt than $pH=7+\frac{1}{2}p{K}_a-\frac{1}{2}p{K}_b$