MCQ
The concentration of hydronium $({H_3}{O^ + })$ ion in water is
- AZero
- B$1 \times {10^7}\,gm\,\,ion/litre$
- C$1 \times {10^{ - 14}}\,gm\,\,ion/litre$
- ✓$1 \times {10^{ - 7}}\,gm\,\,ion/litre$
✓
Answer
Correct option: D.
$1 \times {10^{ - 7}}\,gm\,\,ion/litre$
(d) ${H_3}{O^ + } \rightleftharpoons O{H^ - } + {H_2}$
$pOH + pH = 14$ ; $7 + 7 = 14$;$[{H^ + }] + [O{H^ - }] = {10^{ - 14}}$
${10^{ - 7}} + {10^{ - 7}} = {10^{ - 14}}$; $[O{H^ - }] = {10^{ - 7}}$ $gm \,ion/litre$
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