In the reaction $2 H_{2} O ⇌ H_{3} O^{+} + O H^{-}$ , water is:

week base

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A weak acid

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both a weak acid and a weak base

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neither an acid nor a base

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Solution

The correct option is B both a weak acid and a weak base
Water is a neutral compound which dissociates to give both acid $(H_{3} O^{+})$ and base $(O H^{-})$ . So, it acts as both weak acid and a weak base.

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In the reaction 2H2O⇌H3O++OH−, water is:

The correct option is B both a weak acid and a weak baseWater is a neutral compound which dissociates to give both acid (H3O+)and base (OH−). So, it acts as both weak acid and a weak base.

In the reaction $2 H_{2} O ⇌ H_{3} O^{+} + O H^{-}$ , water is:

The correct option is B both a weak acid and a weak base
Water is a neutral compound which dissociates to give both acid $(H_{3} O^{+})$ and base $(O H^{-})$ . So, it acts as both weak acid and a weak base.