Complete the following reaction:
$H_{2} O (l) +$ $⇌ H_{3} O^{+} +$

H_{2} O

(l)

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O H^{-}

(aq)

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O_{2}

(g)

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H_{2}

(g)

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Solution

The correct option is B $O H^{-}$ (aq)
This reaction is known as autoprotolysis or self ionisation of water. It occurs due to the amphoteric nature of water.
Water acts as an acid by donating $H^{+}$ ion and forms hydroxyl ion, $O H^{-}$ . Simultaneously, it acts a base by accepting $H^{+}$ ion to form hydronium ion, $H_{3} O^{+}$ .
$H_{2} O (l) + H_{2} O (l) ⇌ H_{3} O^{+} (a q) + O H^{-} (a q)$

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Similar questions

H_{2} O (l) +

⇌ H_{3} O^{+} +

Among the following species, identify the iso-structural pairs.

$N F_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}, N_{3} H$

Among the following species, the isostructural pairs are $N F_{3}$ , ${N O_{3}}^{-}$ , $B F_{3}$ , ${H_{3} O}^{+}$ , $H N_{3}$

N F_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}

Among the following species identify the isostructural pairs :

$N H_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}, H N_{3}$

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