# How does ammonia act as a base?

And thus $N {H}_{3} \left(a q\right) + {H}_{2} O r i g h t \le f t h a r p \infty n s N {H}_{4}^{+} + H {O}^{-}$, ammonia has acted as a BASE, as a proton acceptor.
$N {H}_{4}^{+} + {H}_{2} O \left(l\right) r i g h t \le f t h a r p \infty n s N {H}_{3} \left(a q\right) + {H}_{3} {O}^{+}$