MCQ
What will be the $pH$ of an aqueous solution of $1.0\, M$ ammonium formate ? (Given: $pK_a = 3.8$ and $pK_b = 4.8$)
- A$7.5$
- B$3.4$
- ✓$6.5$
- D$10.2$
✓
Answer
Correct option: C.
$6.5$
c
$pH = 7 + \frac{1}{2}\,p{K_a} - \frac{1}{2}\,p{K_b}$
$pH = 7 + \frac{1}{2}\,p{K_a} - \frac{1}{2}\,p{K_b}$
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