Why is ammonia a base?

Answer 1

Ammonia is a base because it reacts with acid to form a salt. The lone pair of electrons on the nitrogen donate to a proton producedc by acids. It also has a pH of more than 7 and it dissolves in water.

Answer 2

Ammonia is a base because it can accept a proton (H+) from an acid, forming the ammonium ion (NH4+). This interaction increases the concentration of hydroxide ions (OH-) in solution, leading to its basic properties.