Foundation
Chemistry Foundation
Theories of Acids and Bases
Question
The reaction of water with ammonia is given by the following equation, in this reaction water acts as :
H2O + NH3 ⇌ NH4+ + OH–
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Solution
In this acid-base reaction, water (H2O) donates a proton (H+) to ammonia (NH3), forming the ammonium ion (NH4+) and a hydroxide ion (OH-). According to the Brønsted-Lowry definition, the species that donates a proton is an acid. Therefore, water acts as an acid in this specific reaction.
Final Answer: acid