MCQ
The $pH$ of a $0.02 \,M$ solution of hydrochloric acid is
- A$2$
- ✓$1.7$
- C$0.3$
- D$2.2$
✓
Answer
Correct option: B.
$1.7$
(b) $[{H^ + }] = 2 \times {10^{ - 2}}\,M$
$\because \,pH = - {\text{log}}\,\,[2 \times {10^{ - 2}}]$;
$pH = 1.7$ i.e. in between $1$ and $2$.
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