Question

Ammonia gas dissolves in water to form ${NH}_{4}OH$. In this reaction, water acts as:

• A. a conjugate base
• B. a non-polar solvent
• C. an acid
• D. a base

Answer 1

The correct option is C an acid

$H_{2}O+{NH}_3\rightleftharpoons {NH}_4^{+}+{OH}^{-}$

Water is donating $H^{+}$ ions which lone pair on Nitrogen is accepting to form ammonium ion.

Hence, the correct option is C.

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