MCQ
$pH$ of human blood is $7.4$ . Then ${H^ + }$ concentration will be
- ✓$4 \times {10^{ - 8}}$
- B$2 \times {10^{ - 8}}$
- C$4 \times {10^{ - 4}}$
- D$2 \times {10^{ - 4}}$
✓
Answer
Correct option: A.
$4 \times {10^{ - 8}}$
(a) $pH = - \log [{H^ + }]$;$7.4 = - \log [{H^ + }]$;
$[{H^ + }] = 4 \times {10^{ - 8}}M$
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