MCQ
If the $pH$ of a solution is $4.0 $ at ${25\,^o}C,$ its $pOH$ would be $({K_w} = {10^{ - 14}})$
- A$4$
- B$6$
- C$8$
- ✓$10$
✓
Answer
Correct option: D.
$10$
(d) $pH + pOH = 14,\,pH = 4.0$
$pOH = 14 - pH$ ; $pOH = 14 - 4.0 = 10.0$
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